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Finding the Fourth Proportional to 625,410.84, 863,067.69 and 338,930.91

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Solution

The fourth proportional to 625,410.84, 863,067.69 and 338,930.91 is: 467,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,410.84 : 863,067.69 = 338,930.91 : x
  2. Step 2: Convert to fraction form
    625,410.84/863,067.69 = 338,930.91/x
  3. Step 3: Cross multiply
    625,410.84x = 863,067.69 × 338,930.91
  4. Step 4: Simplify right side
    625,410.84x = 292,520,317,563.30
  5. Step 5: Solve for x
    x = 292,520,317,563.30/625,410.84
  6. Step 6: Final answer
    x = 467,725.05

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1.5x scale

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.