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Finding the Fourth Proportional to 567,427.32, 781,988.94 and 423,934.20

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Solution

The fourth proportional to 567,427.32, 781,988.94 and 423,934.20 is: 584,236.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,427.32 : 781,988.94 = 423,934.20 : x
  2. Step 2: Convert to fraction form
    567,427.32/781,988.94 = 423,934.20/x
  3. Step 3: Cross multiply
    567,427.32x = 781,988.94 × 423,934.20
  4. Step 4: Simplify right side
    567,427.32x = 331,511,855,687.75
  5. Step 5: Solve for x
    x = 331,511,855,687.75/567,427.32
  6. Step 6: Final answer
    x = 584,236.68

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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.