Home / 1,239,757.76-1,855,390.22-861,105.44

Finding the Fourth Proportional to 1,239,757.76, 1,855,390.22 and 861,105.44

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Solution

The fourth proportional to 1,239,757.76, 1,855,390.22 and 861,105.44 is: 1,288,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,757.76 : 1,855,390.22 = 861,105.44 : x
  2. Step 2: Convert to fraction form
    1,239,757.76/1,855,390.22 = 861,105.44/x
  3. Step 3: Cross multiply
    1,239,757.76x = 1,855,390.22 × 861,105.44
  4. Step 4: Simplify right side
    1,239,757.76x = 1,597,686,607,459.27
  5. Step 5: Solve for x
    x = 1,597,686,607,459.27/1,239,757.76
  6. Step 6: Final answer
    x = 1,288,708.70

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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.