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Finding the Fourth Proportional to 567,073.71, 782,561.25 and 312,424.90

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Solution

The fourth proportional to 567,073.71, 782,561.25 and 312,424.90 is: 431,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,073.71 : 782,561.25 = 312,424.90 : x
  2. Step 2: Convert to fraction form
    567,073.71/782,561.25 = 312,424.90/x
  3. Step 3: Cross multiply
    567,073.71x = 782,561.25 × 312,424.90
  4. Step 4: Simplify right side
    567,073.71x = 244,491,618,318.72
  5. Step 5: Solve for x
    x = 244,491,618,318.72/567,073.71
  6. Step 6: Final answer
    x = 431,146.10

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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.