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Finding the Fourth Proportional to 502,705.20, 754,932.60 and 486,958.80

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Solution

The fourth proportional to 502,705.20, 754,932.60 and 486,958.80 is: 731,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,705.20 : 754,932.60 = 486,958.80 : x
  2. Step 2: Convert to fraction form
    502,705.20/754,932.60 = 486,958.80/x
  3. Step 3: Cross multiply
    502,705.20x = 754,932.60 × 486,958.80
  4. Step 4: Simplify right side
    502,705.20x = 367,621,072,976.88
  5. Step 5: Solve for x
    x = 367,621,072,976.88/502,705.20
  6. Step 6: Final answer
    x = 731,285.60

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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.