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Finding the Fourth Proportional to 399,672.30, 599,508.45 and 367,013.10

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Solution

The fourth proportional to 399,672.30, 599,508.45 and 367,013.10 is: 550,519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,672.30 : 599,508.45 = 367,013.10 : x
  2. Step 2: Convert to fraction form
    399,672.30/599,508.45 = 367,013.10/x
  3. Step 3: Cross multiply
    399,672.30x = 599,508.45 × 367,013.10
  4. Step 4: Simplify right side
    399,672.30x = 220,027,454,710.70
  5. Step 5: Solve for x
    x = 220,027,454,710.70/399,672.30
  6. Step 6: Final answer
    x = 550,519.65

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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.