Step 1:
The first step to converting 550499.994423 to a fraction is to re-write 550499.994423 in the form p/q where p and q are both positive integers. To start with, 550499.994423 can be written as simply 550499.994423/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 550499.994423, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 550499.994423/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 550499.994423/1 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 550499.994423 as a fraction:
550500/1 / 1