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Finding the Fourth Proportional to 981,398.73, 1,472,098.12 and 271,426.78

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Solution

The fourth proportional to 981,398.73, 1,472,098.12 and 271,426.78 is: 407,140.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,398.73 : 1,472,098.12 = 271,426.78 : x
  2. Step 2: Convert to fraction form
    981,398.73/1,472,098.12 = 271,426.78/x
  3. Step 3: Cross multiply
    981,398.73x = 1,472,098.12 × 271,426.78
  4. Step 4: Simplify right side
    981,398.73x = 399,566,853,717.21
  5. Step 5: Solve for x
    x = 399,566,853,717.21/981,398.73
  6. Step 6: Final answer
    x = 407,140.18

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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.