Home / 1,187,149.32-1,638,296.20-728,517.24

Finding the Fourth Proportional to 1,187,149.32, 1,638,296.20 and 728,517.24

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Solution

The fourth proportional to 1,187,149.32, 1,638,296.20 and 728,517.24 is: 1,005,372.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,149.32 : 1,638,296.20 = 728,517.24 : x
  2. Step 2: Convert to fraction form
    1,187,149.32/1,638,296.20 = 728,517.24/x
  3. Step 3: Cross multiply
    1,187,149.32x = 1,638,296.20 × 728,517.24
  4. Step 4: Simplify right side
    1,187,149.32x = 1,193,527,025,926.49
  5. Step 5: Solve for x
    x = 1,193,527,025,926.49/1,187,149.32
  6. Step 6: Final answer
    x = 1,005,372.29

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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.