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Finding the Fourth Proportional to 487,620.70, 731,431.05 and 480,622.30

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Solution

The fourth proportional to 487,620.70, 731,431.05 and 480,622.30 is: 720,933.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,620.70 : 731,431.05 = 480,622.30 : x
  2. Step 2: Convert to fraction form
    487,620.70/731,431.05 = 480,622.30/x
  3. Step 3: Cross multiply
    487,620.70x = 731,431.05 × 480,622.30
  4. Step 4: Simplify right side
    487,620.70x = 351,542,073,542.42
  5. Step 5: Solve for x
    x = 351,542,073,542.42/487,620.70
  6. Step 6: Final answer
    x = 720,933.45

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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.