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Finding the Fourth Proportional to 567,301.20, 782,892 and 312,668.76

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Solution

The fourth proportional to 567,301.20, 782,892 and 312,668.76 is: 431,491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,301.20 : 782,892 = 312,668.76 : x
  2. Step 2: Convert to fraction form
    567,301.20/782,892 = 312,668.76/x
  3. Step 3: Cross multiply
    567,301.20x = 782,892 × 312,668.76
  4. Step 4: Simplify right side
    567,301.20x = 244,785,870,853.92
  5. Step 5: Solve for x
    x = 244,785,870,853.92/567,301.20
  6. Step 6: Final answer
    x = 431,491.90

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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.