Home / 1,272,205.76-1,755,606.84-728,323.52

Finding the Fourth Proportional to 1,272,205.76, 1,755,606.84 and 728,323.52

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Solution

The fourth proportional to 1,272,205.76, 1,755,606.84 and 728,323.52 is: 1,005,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,205.76 : 1,755,606.84 = 728,323.52 : x
  2. Step 2: Convert to fraction form
    1,272,205.76/1,755,606.84 = 728,323.52/x
  3. Step 3: Cross multiply
    1,272,205.76x = 1,755,606.84 × 728,323.52
  4. Step 4: Simplify right side
    1,272,205.76x = 1,278,649,753,444.88
  5. Step 5: Solve for x
    x = 1,278,649,753,444.88/1,272,205.76
  6. Step 6: Final answer
    x = 1,005,065.21

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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.