Finding the Fourth Proportional to 478,472.36, 717,684.68 and 178,930.92
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Solution
The fourth proportional to 478,472.36, 717,684.68 and 178,930.92 is: 268,387.46
Step by Step Solution
- Step 1: Write the proportion equation
478,472.36 : 717,684.68 = 178,930.92 : x - Step 2: Convert to fraction form
478,472.36/717,684.68 = 178,930.92/x - Step 3: Cross multiply
478,472.36x = 717,684.68 × 178,930.92 - Step 4: Simplify right side
478,472.36x = 128,415,980,062.31 - Step 5: Solve for x
x = 128,415,980,062.31/478,472.36 - Step 6: Final answer
x = 268,387.46
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1.5x scale
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.