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Finding the Fourth Proportional to 625,690.35, 938,535.52 and 288,631.28

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Solution

The fourth proportional to 625,690.35, 938,535.52 and 288,631.28 is: 432,946.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,690.35 : 938,535.52 = 288,631.28 : x
  2. Step 2: Convert to fraction form
    625,690.35/938,535.52 = 288,631.28/x
  3. Step 3: Cross multiply
    625,690.35x = 938,535.52 × 288,631.28
  4. Step 4: Simplify right side
    625,690.35x = 270,890,707,177.60
  5. Step 5: Solve for x
    x = 270,890,707,177.60/625,690.35
  6. Step 6: Final answer
    x = 432,946.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.