Finding the Fourth Proportional to 553,125.68, 763,327.79 and 311,416.97
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Solution
The fourth proportional to 553,125.68, 763,327.79 and 311,416.97 is: 429,763.49
Step by Step Solution
- Step 1: Write the proportion equation
553,125.68 : 763,327.79 = 311,416.97 : x - Step 2: Convert to fraction form
553,125.68/763,327.79 = 311,416.97/x - Step 3: Cross multiply
553,125.68x = 763,327.79 × 311,416.97 - Step 4: Simplify right side
553,125.68x = 237,713,222,104.87 - Step 5: Solve for x
x = 237,713,222,104.87/553,125.68 - Step 6: Final answer
x = 429,763.49
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.