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Finding the Fourth Proportional to 625,456.90, 863,107.38 and 338,970.88

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Solution

The fourth proportional to 625,456.90, 863,107.38 and 338,970.88 is: 467,767.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,456.90 : 863,107.38 = 338,970.88 : x
  2. Step 2: Convert to fraction form
    625,456.90/863,107.38 = 338,970.88/x
  3. Step 3: Cross multiply
    625,456.90x = 863,107.38 × 338,970.88
  4. Step 4: Simplify right side
    625,456.90x = 292,568,268,133.09
  5. Step 5: Solve for x
    x = 292,568,268,133.09/625,456.90
  6. Step 6: Final answer
    x = 467,767.27

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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.