Home / 1,188,240.22-1,639,771.92-644,375.83

Finding the Fourth Proportional to 1,188,240.22, 1,639,771.92 and 644,375.83

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Solution

The fourth proportional to 1,188,240.22, 1,639,771.92 and 644,375.83 is: 889,238.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,240.22 : 1,639,771.92 = 644,375.83 : x
  2. Step 2: Convert to fraction form
    1,188,240.22/1,639,771.92 = 644,375.83/x
  3. Step 3: Cross multiply
    1,188,240.22x = 1,639,771.92 × 644,375.83
  4. Step 4: Simplify right side
    1,188,240.22x = 1,056,629,391,960.69
  5. Step 5: Solve for x
    x = 1,056,629,391,960.69/1,188,240.22
  6. Step 6: Final answer
    x = 889,238.87

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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.