Home / 2,661,408.70-3,992,113.05-978,163.90

Finding the Fourth Proportional to 2,661,408.70, 3,992,113.05 and 978,163.90

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Solution

The fourth proportional to 2,661,408.70, 3,992,113.05 and 978,163.90 is: 1,467,245.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,408.70 : 3,992,113.05 = 978,163.90 : x
  2. Step 2: Convert to fraction form
    2,661,408.70/3,992,113.05 = 978,163.90/x
  3. Step 3: Cross multiply
    2,661,408.70x = 3,992,113.05 × 978,163.90
  4. Step 4: Simplify right side
    2,661,408.70x = 3,904,940,870,228.90
  5. Step 5: Solve for x
    x = 3,904,940,870,228.90/2,661,408.70
  6. Step 6: Final answer
    x = 1,467,245.85

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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.