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Finding the Fourth Proportional to 667,458.98, 920,355.45 and 425,358.26

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Solution

The fourth proportional to 667,458.98, 920,355.45 and 425,358.26 is: 586,524.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,458.98 : 920,355.45 = 425,358.26 : x
  2. Step 2: Convert to fraction form
    667,458.98/920,355.45 = 425,358.26/x
  3. Step 3: Cross multiply
    667,458.98x = 920,355.45 × 425,358.26
  4. Step 4: Simplify right side
    667,458.98x = 391,480,792,793.52
  5. Step 5: Solve for x
    x = 391,480,792,793.52/667,458.98
  6. Step 6: Final answer
    x = 586,524.12

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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.