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Finding the Fourth Proportional to 442,612.35, 664,410.60 and 274,322.70

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Solution

The fourth proportional to 442,612.35, 664,410.60 and 274,322.70 is: 411,789.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,612.35 : 664,410.60 = 274,322.70 : x
  2. Step 2: Convert to fraction form
    442,612.35/664,410.60 = 274,322.70/x
  3. Step 3: Cross multiply
    442,612.35x = 664,410.60 × 274,322.70
  4. Step 4: Simplify right side
    442,612.35x = 182,262,909,700.62
  5. Step 5: Solve for x
    x = 182,262,909,700.62/442,612.35
  6. Step 6: Final answer
    x = 411,789.03

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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.