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Finding the Fourth Proportional to 625,678.25, 938,796.52 and 288,537.92

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Solution

The fourth proportional to 625,678.25, 938,796.52 and 288,537.92 is: 432,935.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,678.25 : 938,796.52 = 288,537.92 : x
  2. Step 2: Convert to fraction form
    625,678.25/938,796.52 = 288,537.92/x
  3. Step 3: Cross multiply
    625,678.25x = 938,796.52 × 288,537.92
  4. Step 4: Simplify right side
    625,678.25x = 270,878,396,064.82
  5. Step 5: Solve for x
    x = 270,878,396,064.82/625,678.25
  6. Step 6: Final answer
    x = 432,935.61

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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.