Home / 1,279,726.92-1,766,035.25-728,415.71

Finding the Fourth Proportional to 1,279,726.92, 1,766,035.25 and 728,415.71

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Solution

The fourth proportional to 1,279,726.92, 1,766,035.25 and 728,415.71 is: 1,005,220.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,726.92 : 1,766,035.25 = 728,415.71 : x
  2. Step 2: Convert to fraction form
    1,279,726.92/1,766,035.25 = 728,415.71/x
  3. Step 3: Cross multiply
    1,279,726.92x = 1,766,035.25 × 728,415.71
  4. Step 4: Simplify right side
    1,279,726.92x = 1,286,407,808,041.52
  5. Step 5: Solve for x
    x = 1,286,407,808,041.52/1,279,726.92
  6. Step 6: Final answer
    x = 1,005,220.56

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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.