Home / 1,753,635.20-2,631,489.60-1,279,126.40

Finding the Fourth Proportional to 1,753,635.20, 2,631,489.60 and 1,279,126.40

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Solution

The fourth proportional to 1,753,635.20, 2,631,489.60 and 1,279,126.40 is: 1,919,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753,635.20 : 2,631,489.60 = 1,279,126.40 : x
  2. Step 2: Convert to fraction form
    1,753,635.20/2,631,489.60 = 1,279,126.40/x
  3. Step 3: Cross multiply
    1,753,635.20x = 2,631,489.60 × 1,279,126.40
  4. Step 4: Simplify right side
    1,753,635.20x = 3,366,007,818,685.44
  5. Step 5: Solve for x
    x = 3,366,007,818,685.44/1,753,635.20
  6. Step 6: Final answer
    x = 1,919,445.86

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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.