Compound Interest Formula!  : (
 09-08-2004, 03:21 PM #1 Recycles dryer sheets   Join Date: Jul 2004 Posts: 170 Compound Interest Formula!  : ( Anyone have this so I can input into my spreadsheet? TD __________________ __________________
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Re: **Compound Interest Formula! *: (
 09-08-2004, 04:03 PM #2 Full time employment: Posting here.   Join Date: Aug 2004 Posts: 909 Re: **Compound Interest Formula! *: ( use the future value (FV) function. The formula itself is P(1 + rate)^years __________________ __________________
Re: **Compound Interest Formula! *: (
09-08-2004, 04:12 PM   #3

Posts: n/a
Re: **Compound Interest Formula! *: (

Quote:
 use the future value (FV) function. The formula itself is P(1 + rate)^years
OK, I used to be OK with math as I am a Software Engineer, but I'm Getting to be an old fart now.

What is "^"
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Re: **Compound Interest Formula! *: (
 09-08-2004, 04:15 PM #4 Full time employment: Posting here.   Join Date: Aug 2004 Posts: 909 Re: **Compound Interest Formula! *: ( it's a carrot... yum! It's just a way of denoting an exponent without the use of supercase. __________________
Re:  *Compound Interest Formula! *: (
 09-08-2004, 04:57 PM #5 Recycles dryer sheets   Join Date: Jul 2004 Posts: 170 Re:  *Compound Interest Formula! *: ( Thanks. I used a link I have to a site that provides the results for a weekly contribution @ "x" %---did so for varying inputs, \$100, \$500, \$750, \$1000...then I added the exponential trend curve. I'm getting results: Value = K*e^(0.4967)x Where K is: 3,297 for \$100 weekly contribution 16,487 for \$500 24,731 for \$750 32,974 for \$1,000 Any math whizzes out there? TD 8) __________________
Re:  *Compound Interest Formula! *: (
 09-13-2004, 02:18 PM #6 Recycles dryer sheets   Join Date: Aug 2003 Posts: 474 Re:  *Compound Interest Formula! *: ( I don't understand what you are trying to do. If you are using a constant time frame then the value changes proportionally to the amount that you put in each month. Note that your answer for \$1k is exactly twice your answer for \$500. In Excel the function FV() does all this for you, and will work for any interest rate and number of periods. If you know the future value and want to find the payment amound then PMT() is the one you want. If you are looking for the formula, it's called the annuity formula and you can find it on google. __________________ __________________

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