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Finding the Fourth Proportional to 490,632.40, 735,948.60 and 322,670.80

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Solution

The fourth proportional to 490,632.40, 735,948.60 and 322,670.80 is: 484,006.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,632.40 : 735,948.60 = 322,670.80 : x
  2. Step 2: Convert to fraction form
    490,632.40/735,948.60 = 322,670.80/x
  3. Step 3: Cross multiply
    490,632.40x = 735,948.60 × 322,670.80
  4. Step 4: Simplify right side
    490,632.40x = 237,469,123,520.88
  5. Step 5: Solve for x
    x = 237,469,123,520.88/490,632.40
  6. Step 6: Final answer
    x = 484,006.20

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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.