Step 1:
The first step to converting 405831.605569 to a fraction is to re-write 405831.605569 in the form p/q where p and q are both positive integers. To start with, 405831.605569 can be written as simply 405831.605569/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 405831.605569, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 405831.605569/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 405831.605569/1 each by 1000000:
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 405831.605569 as a fraction:
405832/1 / 1