Home / 1,271,865.92-1,755,272.85-728,172.86

Finding the Fourth Proportional to 1,271,865.92, 1,755,272.85 and 728,172.86

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Solution

The fourth proportional to 1,271,865.92, 1,755,272.85 and 728,172.86 is: 1,004,934.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,865.92 : 1,755,272.85 = 728,172.86 : x
  2. Step 2: Convert to fraction form
    1,271,865.92/1,755,272.85 = 728,172.86/x
  3. Step 3: Cross multiply
    1,271,865.92x = 1,755,272.85 × 728,172.86
  4. Step 4: Simplify right side
    1,271,865.92x = 1,278,142,051,264.85
  5. Step 5: Solve for x
    x = 1,278,142,051,264.85/1,271,865.92
  6. Step 6: Final answer
    x = 1,004,934.59

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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.