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Finding the Fourth Proportional to 492,795.80, 739,193.70 and 442,932.20

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Solution

The fourth proportional to 492,795.80, 739,193.70 and 442,932.20 is: 664,398.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,795.80 : 739,193.70 = 442,932.20 : x
  2. Step 2: Convert to fraction form
    492,795.80/739,193.70 = 442,932.20/x
  3. Step 3: Cross multiply
    492,795.80x = 739,193.70 × 442,932.20
  4. Step 4: Simplify right side
    492,795.80x = 327,412,691,767.14
  5. Step 5: Solve for x
    x = 327,412,691,767.14/492,795.80
  6. Step 6: Final answer
    x = 664,398.30

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Similar ratio
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1.5x scale

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.