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Finding the Fourth Proportional to 634,067.64, 875,178.72 and 392,209.56

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Solution

The fourth proportional to 634,067.64, 875,178.72 and 392,209.56 is: 541,351.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,067.64 : 875,178.72 = 392,209.56 : x
  2. Step 2: Convert to fraction form
    634,067.64/875,178.72 = 392,209.56/x
  3. Step 3: Cross multiply
    634,067.64x = 875,178.72 × 392,209.56
  4. Step 4: Simplify right side
    634,067.64x = 343,253,460,692.56
  5. Step 5: Solve for x
    x = 343,253,460,692.56/634,067.64
  6. Step 6: Final answer
    x = 541,351.49

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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.