| a = | Initial population observed per month |
| r = | Common ratio of geometric series |
| n = | Number of terms of geometric series (Example number of months) |
| L = | Last term number |
| Sum = | Total Population |
| Practice exercise: | ||||
Assuming the cell growth ratio is 1.5 and it is growing in geometric progression, What is the total count of cells after 37 seconds. Answer: 1,310,498 |