Step 1:
The first step to converting 355369.3929621 to a fraction is to re-write 355369.3929621 in the form p/q where p and q are both positive integers. To start with, 355369.3929621 can be written as simply 355369.3929621/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 355369.3929621, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 355369.3929621/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 355369.3929621/1 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 355369.3929621 as a fraction:
710739/2 / 1