Home / 1,271,886.28-1,755,300.71-728,192.61

Finding the Fourth Proportional to 1,271,886.28, 1,755,300.71 and 728,192.61

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Solution

The fourth proportional to 1,271,886.28, 1,755,300.71 and 728,192.61 is: 1,004,961.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,886.28 : 1,755,300.71 = 728,192.61 : x
  2. Step 2: Convert to fraction form
    1,271,886.28/1,755,300.71 = 728,192.61/x
  3. Step 3: Cross multiply
    1,271,886.28x = 1,755,300.71 × 728,192.61
  4. Step 4: Simplify right side
    1,271,886.28x = 1,278,197,007,170.23
  5. Step 5: Solve for x
    x = 1,278,197,007,170.23/1,271,886.28
  6. Step 6: Final answer
    x = 1,004,961.71

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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.