Home / 1,131,163.77-1,561,040.87-647,885.37

Finding the Fourth Proportional to 1,131,163.77, 1,561,040.87 and 647,885.37

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Solution

The fourth proportional to 1,131,163.77, 1,561,040.87 and 647,885.37 is: 894,101.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,163.77 : 1,561,040.87 = 647,885.37 : x
  2. Step 2: Convert to fraction form
    1,131,163.77/1,561,040.87 = 647,885.37/x
  3. Step 3: Cross multiply
    1,131,163.77x = 1,561,040.87 × 647,885.37
  4. Step 4: Simplify right side
    1,131,163.77x = 1,011,375,538,405.65
  5. Step 5: Solve for x
    x = 1,011,375,538,405.65/1,131,163.77
  6. Step 6: Final answer
    x = 894,101.78

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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.