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Finding the Fourth Proportional to 625,691.85, 938,537.77 and 288,632.79

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Solution

The fourth proportional to 625,691.85, 938,537.77 and 288,632.79 is: 432,949.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,691.85 : 938,537.77 = 288,632.79 : x
  2. Step 2: Convert to fraction form
    625,691.85/938,537.77 = 288,632.79/x
  3. Step 3: Cross multiply
    625,691.85x = 938,537.77 × 288,632.79
  4. Step 4: Simplify right side
    625,691.85x = 270,892,768,939.63
  5. Step 5: Solve for x
    x = 270,892,768,939.63/625,691.85
  6. Step 6: Final answer
    x = 432,949.17

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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.