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Finding the Fourth Proportional to 485,418.70, 729,002.85 and 469,672.30

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Solution

The fourth proportional to 485,418.70, 729,002.85 and 469,672.30 is: 705,354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,418.70 : 729,002.85 = 469,672.30 : x
  2. Step 2: Convert to fraction form
    485,418.70/729,002.85 = 469,672.30/x
  3. Step 3: Cross multiply
    485,418.70x = 729,002.85 × 469,672.30
  4. Step 4: Simplify right side
    485,418.70x = 342,392,445,266.06
  5. Step 5: Solve for x
    x = 342,392,445,266.06/485,418.70
  6. Step 6: Final answer
    x = 705,354.87

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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.