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Finding the Fourth Proportional to 981,612.46, 1,472,375.86 and 307,678.39

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Solution

The fourth proportional to 981,612.46, 1,472,375.86 and 307,678.39 is: 461,504.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,612.46 : 1,472,375.86 = 307,678.39 : x
  2. Step 2: Convert to fraction form
    981,612.46/1,472,375.86 = 307,678.39/x
  3. Step 3: Cross multiply
    981,612.46x = 1,472,375.86 × 307,678.39
  4. Step 4: Simplify right side
    981,612.46x = 453,018,234,079.67
  5. Step 5: Solve for x
    x = 453,018,234,079.67/981,612.46
  6. Step 6: Final answer
    x = 461,504.16

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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.