# The first term of a geometric sequence is 200 and the sum of the first four terms is 324.8. How do you find the common ratio?

##### 1 Answer

Apr 18, 2018

The sum of any geometric sequence is:

s=

s=sum, a=initial term, r=common ratio, n=term number...

We are given s, a, and n, so...

So the limit will be

check...