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Finding the Fourth Proportional to 667,383.50, 920,251.24 and 425,282.60

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Solution

The fourth proportional to 667,383.50, 920,251.24 and 425,282.60 is: 586,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,383.50 : 920,251.24 = 425,282.60 : x
  2. Step 2: Convert to fraction form
    667,383.50/920,251.24 = 425,282.60/x
  3. Step 3: Cross multiply
    667,383.50x = 920,251.24 × 425,282.60
  4. Step 4: Simplify right side
    667,383.50x = 391,366,834,335.96
  5. Step 5: Solve for x
    x = 391,366,834,335.96/667,383.50
  6. Step 6: Final answer
    x = 586,419.71

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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.