Home / 728,287.92-1,005,033.18-406,000.68

Finding the Fourth Proportional to 728,287.92, 1,005,033.18 and 406,000.68

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Solution

The fourth proportional to 728,287.92, 1,005,033.18 and 406,000.68 is: 560,278.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,287.92 : 1,005,033.18 = 406,000.68 : x
  2. Step 2: Convert to fraction form
    728,287.92/1,005,033.18 = 406,000.68/x
  3. Step 3: Cross multiply
    728,287.92x = 1,005,033.18 × 406,000.68
  4. Step 4: Simplify right side
    728,287.92x = 408,044,154,502.56
  5. Step 5: Solve for x
    x = 408,044,154,502.56/728,287.92
  6. Step 6: Final answer
    x = 560,278.63

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Double scale
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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.