Home / 678,232.30-1,017,348.45-412,513.90

Finding the Fourth Proportional to 678,232.30, 1,017,348.45 and 412,513.90

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Solution

The fourth proportional to 678,232.30, 1,017,348.45 and 412,513.90 is: 618,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,232.30 : 1,017,348.45 = 412,513.90 : x
  2. Step 2: Convert to fraction form
    678,232.30/1,017,348.45 = 412,513.90/x
  3. Step 3: Cross multiply
    678,232.30x = 1,017,348.45 × 412,513.90
  4. Step 4: Simplify right side
    678,232.30x = 419,670,376,768.46
  5. Step 5: Solve for x
    x = 419,670,376,768.46/678,232.30
  6. Step 6: Final answer
    x = 618,770.85

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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.