Home / 1,272,340.71-1,755,868.19-728,652.51

Finding the Fourth Proportional to 1,272,340.71, 1,755,868.19 and 728,652.51

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Solution

The fourth proportional to 1,272,340.71, 1,755,868.19 and 728,652.51 is: 1,005,562.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,340.71 : 1,755,868.19 = 728,652.51 : x
  2. Step 2: Convert to fraction form
    1,272,340.71/1,755,868.19 = 728,652.51/x
  3. Step 3: Cross multiply
    1,272,340.71x = 1,755,868.19 × 728,652.51
  4. Step 4: Simplify right side
    1,272,340.71x = 1,279,417,760,229.39
  5. Step 5: Solve for x
    x = 1,279,417,760,229.39/1,272,340.71
  6. Step 6: Final answer
    x = 1,005,562.23

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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.