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Finding the Fourth Proportional to 625,691.51, 938,537.25 and 288,632.44

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Solution

The fourth proportional to 625,691.51, 938,537.25 and 288,632.44 is: 432,948.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,691.51 : 938,537.25 = 288,632.44 : x
  2. Step 2: Convert to fraction form
    625,691.51/938,537.25 = 288,632.44/x
  3. Step 3: Cross multiply
    625,691.51x = 938,537.25 × 288,632.44
  4. Step 4: Simplify right side
    625,691.51x = 270,892,291,805.70
  5. Step 5: Solve for x
    x = 270,892,291,805.70/625,691.51
  6. Step 6: Final answer
    x = 432,948.65

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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.