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Finding the Fourth Proportional to 472,564.20, 708,846.30 and 431,229.90

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Solution

The fourth proportional to 472,564.20, 708,846.30 and 431,229.90 is: 646,844.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,564.20 : 708,846.30 = 431,229.90 : x
  2. Step 2: Convert to fraction form
    472,564.20/708,846.30 = 431,229.90/x
  3. Step 3: Cross multiply
    472,564.20x = 708,846.30 × 431,229.90
  4. Step 4: Simplify right side
    472,564.20x = 305,675,719,064.37
  5. Step 5: Solve for x
    x = 305,675,719,064.37/472,564.20
  6. Step 6: Final answer
    x = 646,844.85

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Similar ratio
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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.