Home / 1,125,391.89-1,687,577.24-485,393.18

Finding the Fourth Proportional to 1,125,391.89, 1,687,577.24 and 485,393.18

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Solution

The fourth proportional to 1,125,391.89, 1,687,577.24 and 485,393.18 is: 727,869.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,391.89 : 1,687,577.24 = 485,393.18 : x
  2. Step 2: Convert to fraction form
    1,125,391.89/1,687,577.24 = 485,393.18/x
  3. Step 3: Cross multiply
    1,125,391.89x = 1,687,577.24 × 485,393.18
  4. Step 4: Simplify right side
    1,125,391.89x = 819,138,472,154.37
  5. Step 5: Solve for x
    x = 819,138,472,154.37/1,125,391.89
  6. Step 6: Final answer
    x = 727,869.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.