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Finding the Fourth Proportional to 486,132.60, 729,198.90 and 441,809.40

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Solution

The fourth proportional to 486,132.60, 729,198.90 and 441,809.40 is: 662,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,132.60 : 729,198.90 = 441,809.40 : x
  2. Step 2: Convert to fraction form
    486,132.60/729,198.90 = 441,809.40/x
  3. Step 3: Cross multiply
    486,132.60x = 729,198.90 × 441,809.40
  4. Step 4: Simplify right side
    486,132.60x = 322,166,928,489.66
  5. Step 5: Solve for x
    x = 322,166,928,489.66/486,132.60
  6. Step 6: Final answer
    x = 662,714.10

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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.