Home / 911,331.40-1,366,997.10-280,244.20

Finding the Fourth Proportional to 911,331.40, 1,366,997.10 and 280,244.20

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Solution

The fourth proportional to 911,331.40, 1,366,997.10 and 280,244.20 is: 420,366.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,331.40 : 1,366,997.10 = 280,244.20 : x
  2. Step 2: Convert to fraction form
    911,331.40/1,366,997.10 = 280,244.20/x
  3. Step 3: Cross multiply
    911,331.40x = 1,366,997.10 × 280,244.20
  4. Step 4: Simplify right side
    911,331.40x = 383,093,008,691.82
  5. Step 5: Solve for x
    x = 383,093,008,691.82/911,331.40
  6. Step 6: Final answer
    x = 420,366.30

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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.