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How to Find the Present Value

In order to find the future value you need to use this formula:

FV= PV(1+i)^t

PV= Present Value
i= interest rate
t= periods (time)

Remember your compound periods (this is how many times you compound the interest) :

Annually: 1
Semi-annually: 2
Quarterly: 4
Monthly: 12
Weekly: 56
Yearly: 360

Let's do an example:
Find the future value of $1000 dollars compound quarterly with an interest of 12% for 4 years.

In the financial calculator this is the input to find the future value:

Since you are compounding quartely first find out the number of periods by multiplying 4 years by 4 periods, therefore you have 4X4= 16 periods, also you need to divide the rate by 4, 12/4 = 3%.

Now you can plug it in the calculator:

N= 16
I= 3
PV= -1000 (the pv must be negative or the calculator will give you an error)
PMT= 0
FV= 1604.71