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Finding the Fourth Proportional to 526,434.60, 726,479.70 and 284,717.16

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Solution

The fourth proportional to 526,434.60, 726,479.70 and 284,717.16 is: 392,909.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,434.60 : 726,479.70 = 284,717.16 : x
  2. Step 2: Convert to fraction form
    526,434.60/726,479.70 = 284,717.16/x
  3. Step 3: Cross multiply
    526,434.60x = 726,479.70 × 284,717.16
  4. Step 4: Simplify right side
    526,434.60x = 206,841,236,981.65
  5. Step 5: Solve for x
    x = 206,841,236,981.65/526,434.60
  6. Step 6: Final answer
    x = 392,909.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.