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Finding the Fourth Proportional to 490,882.60, 735,287.10 and 407,938.60

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Solution

The fourth proportional to 490,882.60, 735,287.10 and 407,938.60 is: 611,046.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,882.60 : 735,287.10 = 407,938.60 : x
  2. Step 2: Convert to fraction form
    490,882.60/735,287.10 = 407,938.60/x
  3. Step 3: Cross multiply
    490,882.60x = 735,287.10 × 407,938.60
  4. Step 4: Simplify right side
    490,882.60x = 299,951,990,172.06
  5. Step 5: Solve for x
    x = 299,951,990,172.06/490,882.60
  6. Step 6: Final answer
    x = 611,046.29

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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.