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Finding the Fourth Proportional to 491,874.78, 737,701.44 and 321,042.72

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Solution

The fourth proportional to 491,874.78, 737,701.44 and 321,042.72 is: 481,491.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,874.78 : 737,701.44 = 321,042.72 : x
  2. Step 2: Convert to fraction form
    491,874.78/737,701.44 = 321,042.72/x
  3. Step 3: Cross multiply
    491,874.78x = 737,701.44 × 321,042.72
  4. Step 4: Simplify right side
    491,874.78x = 236,833,676,845.52
  5. Step 5: Solve for x
    x = 236,833,676,845.52/491,874.78
  6. Step 6: Final answer
    x = 481,491.81

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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.