Finding the Fourth Proportional to 478,472.38, 717,684.72 and 178,930.94
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Solution
The fourth proportional to 478,472.38, 717,684.72 and 178,930.94 is: 268,387.49
Step by Step Solution
- Step 1: Write the proportion equation
478,472.38 : 717,684.72 = 178,930.94 : x - Step 2: Convert to fraction form
478,472.38/717,684.72 = 178,930.94/x - Step 3: Cross multiply
478,472.38x = 717,684.72 × 178,930.94 - Step 4: Simplify right side
478,472.38x = 128,416,001,573.24 - Step 5: Solve for x
x = 128,416,001,573.24/478,472.38 - Step 6: Final answer
x = 268,387.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.