Home / 678,046.30-1,017,069.45-412,327.90

Finding the Fourth Proportional to 678,046.30, 1,017,069.45 and 412,327.90

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Solution

The fourth proportional to 678,046.30, 1,017,069.45 and 412,327.90 is: 618,491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,046.30 : 1,017,069.45 = 412,327.90 : x
  2. Step 2: Convert to fraction form
    678,046.30/1,017,069.45 = 412,327.90/x
  3. Step 3: Cross multiply
    678,046.30x = 1,017,069.45 × 412,327.90
  4. Step 4: Simplify right side
    678,046.30x = 419,366,110,472.66
  5. Step 5: Solve for x
    x = 419,366,110,472.66/678,046.30
  6. Step 6: Final answer
    x = 618,491.85

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Similar ratio
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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.