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Finding the Fourth Proportional to 425,691.52, 638,106.09 and 276,026.74

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Solution

The fourth proportional to 425,691.52, 638,106.09 and 276,026.74 is: 413,760.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,691.52 : 638,106.09 = 276,026.74 : x
  2. Step 2: Convert to fraction form
    425,691.52/638,106.09 = 276,026.74/x
  3. Step 3: Cross multiply
    425,691.52x = 638,106.09 × 276,026.74
  4. Step 4: Simplify right side
    425,691.52x = 176,134,343,796.85
  5. Step 5: Solve for x
    x = 176,134,343,796.85/425,691.52
  6. Step 6: Final answer
    x = 413,760.52

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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.