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Finding the Fourth Proportional to 672,937.44, 928,419.18 and 431,353.23

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Solution

The fourth proportional to 672,937.44, 928,419.18 and 431,353.23 is: 595,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,937.44 : 928,419.18 = 431,353.23 : x
  2. Step 2: Convert to fraction form
    672,937.44/928,419.18 = 431,353.23/x
  3. Step 3: Cross multiply
    672,937.44x = 928,419.18 × 431,353.23
  4. Step 4: Simplify right side
    672,937.44x = 400,476,612,086.95
  5. Step 5: Solve for x
    x = 400,476,612,086.95/672,937.44
  6. Step 6: Final answer
    x = 595,117.15

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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.