Home / 1,391,198.68-1,921,655.10-1,150,453.72

Finding the Fourth Proportional to 1,391,198.68, 1,921,655.10 and 1,150,453.72

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Solution

The fourth proportional to 1,391,198.68, 1,921,655.10 and 1,150,453.72 is: 1,589,115.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,198.68 : 1,921,655.10 = 1,150,453.72 : x
  2. Step 2: Convert to fraction form
    1,391,198.68/1,921,655.10 = 1,150,453.72/x
  3. Step 3: Cross multiply
    1,391,198.68x = 1,921,655.10 × 1,150,453.72
  4. Step 4: Simplify right side
    1,391,198.68x = 2,210,775,258,351.97
  5. Step 5: Solve for x
    x = 2,210,775,258,351.97/1,391,198.68
  6. Step 6: Final answer
    x = 1,589,115.41

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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.