Home / 1,188,753.28-1,640,049.04-781,074.56

Finding the Fourth Proportional to 1,188,753.28, 1,640,049.04 and 781,074.56

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Solution

The fourth proportional to 1,188,753.28, 1,640,049.04 and 781,074.56 is: 1,077,600.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,753.28 : 1,640,049.04 = 781,074.56 : x
  2. Step 2: Convert to fraction form
    1,188,753.28/1,640,049.04 = 781,074.56/x
  3. Step 3: Cross multiply
    1,188,753.28x = 1,640,049.04 × 781,074.56
  4. Step 4: Simplify right side
    1,188,753.28x = 1,281,000,582,296.42
  5. Step 5: Solve for x
    x = 1,281,000,582,296.42/1,188,753.28
  6. Step 6: Final answer
    x = 1,077,600.04

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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.