Step 1:
The first step to converting 1620195.4402772 to a fraction is to re-write 1620195.4402772 in the form p/q where p and q are both positive integers. To start with, 1620195.4402772 can be written as simply 1620195.4402772/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 1620195.4402772, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 1620195.4402772/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 1620195.4402772/1 each by 10000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 1620195.4402772 as a fraction:
1620195/1 / 1