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Finding the Fourth Proportional to 981,718.16, 1,472,732.76 and 316,714.64

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Solution

The fourth proportional to 981,718.16, 1,472,732.76 and 316,714.64 is: 475,122.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,718.16 : 1,472,732.76 = 316,714.64 : x
  2. Step 2: Convert to fraction form
    981,718.16/1,472,732.76 = 316,714.64/x
  3. Step 3: Cross multiply
    981,718.16x = 1,472,732.76 × 316,714.64
  4. Step 4: Simplify right side
    981,718.16x = 466,436,025,899.61
  5. Step 5: Solve for x
    x = 466,436,025,899.61/981,718.16
  6. Step 6: Final answer
    x = 475,122.13

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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.