Home / 684,759.12-1,027,496.80-280,251.60

Finding the Fourth Proportional to 684,759.12, 1,027,496.80 and 280,251.60

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Solution

The fourth proportional to 684,759.12, 1,027,496.80 and 280,251.60 is: 420,523.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,759.12 : 1,027,496.80 = 280,251.60 : x
  2. Step 2: Convert to fraction form
    684,759.12/1,027,496.80 = 280,251.60/x
  3. Step 3: Cross multiply
    684,759.12x = 1,027,496.80 × 280,251.60
  4. Step 4: Simplify right side
    684,759.12x = 287,957,622,194.88
  5. Step 5: Solve for x
    x = 287,957,622,194.88/684,759.12
  6. Step 6: Final answer
    x = 420,523.97

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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.