Home / 1,271,863.92-1,755,270.09-728,170.86

Finding the Fourth Proportional to 1,271,863.92, 1,755,270.09 and 728,170.86

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Solution

The fourth proportional to 1,271,863.92, 1,755,270.09 and 728,170.86 is: 1,004,931.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,863.92 : 1,755,270.09 = 728,170.86 : x
  2. Step 2: Convert to fraction form
    1,271,863.92/1,755,270.09 = 728,170.86/x
  3. Step 3: Cross multiply
    1,271,863.92x = 1,755,270.09 × 728,170.86
  4. Step 4: Simplify right side
    1,271,863.92x = 1,278,136,530,967.58
  5. Step 5: Solve for x
    x = 1,278,136,530,967.58/1,271,863.92
  6. Step 6: Final answer
    x = 1,004,931.83

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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.