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Finding the Fourth Proportional to 494,065.02, 681,732 and 287,379.12

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Solution

The fourth proportional to 494,065.02, 681,732 and 287,379.12 is: 396,537.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,065.02 : 681,732 = 287,379.12 : x
  2. Step 2: Convert to fraction form
    494,065.02/681,732 = 287,379.12/x
  3. Step 3: Cross multiply
    494,065.02x = 681,732 × 287,379.12
  4. Step 4: Simplify right side
    494,065.02x = 195,915,542,235.84
  5. Step 5: Solve for x
    x = 195,915,542,235.84/494,065.02
  6. Step 6: Final answer
    x = 396,537.97

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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.