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Finding the Fourth Proportional to 737,248.70, 1,016,879.12 and 492,109.86

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Solution

The fourth proportional to 737,248.70, 1,016,879.12 and 492,109.86 is: 678,761.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,248.70 : 1,016,879.12 = 492,109.86 : x
  2. Step 2: Convert to fraction form
    737,248.70/1,016,879.12 = 492,109.86/x
  3. Step 3: Cross multiply
    737,248.70x = 1,016,879.12 × 492,109.86
  4. Step 4: Simplify right side
    737,248.70x = 500,416,241,380.12
  5. Step 5: Solve for x
    x = 500,416,241,380.12/737,248.70
  6. Step 6: Final answer
    x = 678,761.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.