Finding the Fourth Proportional to 319,127,470.92, 478,655,317.71 and 85,975,414.47
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Solution
The fourth proportional to 319,127,470.92, 478,655,317.71 and 85,975,414.47 is: 128,953,453.02
Step by Step Solution
- Step 1: Write the proportion equation
319,127,470.92 : 478,655,317.71 = 85,975,414.47 : x - Step 2: Convert to fraction form
319,127,470.92/478,655,317.71 = 85,975,414.47/x - Step 3: Cross multiply
319,127,470.92x = 478,655,317.71 × 85,975,414.47 - Step 4: Simplify right side
319,127,470.92x = 41,152,589,328,386,776 - Step 5: Solve for x
x = 41,152,589,328,386,776/319,127,470.92 - Step 6: Final answer
x = 128,953,453.02
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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.