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Finding the Fourth Proportional to 679,545.60, 938,789.76 and 447,523.92

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Solution

The fourth proportional to 679,545.60, 938,789.76 and 447,523.92 is: 618,252.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,545.60 : 938,789.76 = 447,523.92 : x
  2. Step 2: Convert to fraction form
    679,545.60/938,789.76 = 447,523.92/x
  3. Step 3: Cross multiply
    679,545.60x = 938,789.76 × 447,523.92
  4. Step 4: Simplify right side
    679,545.60x = 420,130,873,451.06
  5. Step 5: Solve for x
    x = 420,130,873,451.06/679,545.60
  6. Step 6: Final answer
    x = 618,252.66

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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.