To find the price of the refrigerator before the markup, we can let \( x \) be the original price. The refrigerator is marked up by 25%, so the price after the markup is given by:
\[ x + 0.25x = 1.25x \]
This is equal to the marked price of $406.25. Therefore, we can set up the equation:
\[ 1.25x = 406.25 \]
Now, we can solve for \( x \) by dividing both sides by 1.25:
\[ x = \frac{406.25}{1.25} \]
Calculating the right side:
\[ x = 325 \]
Thus, the original price of the refrigerator before the markup is:
\[ \boxed{325} \]
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