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Finding the Fourth Proportional to 492,732.40, 739,390.20 and 324,738.40

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Solution

The fourth proportional to 492,732.40, 739,390.20 and 324,738.40 is: 487,299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,732.40 : 739,390.20 = 324,738.40 : x
  2. Step 2: Convert to fraction form
    492,732.40/739,390.20 = 324,738.40/x
  3. Step 3: Cross multiply
    492,732.40x = 739,390.20 × 324,738.40
  4. Step 4: Simplify right side
    492,732.40x = 240,108,390,523.68
  5. Step 5: Solve for x
    x = 240,108,390,523.68/492,732.40
  6. Step 6: Final answer
    x = 487,299.78

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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.