Home / 2,661,406.70-3,992,110.05-978,161.90

Finding the Fourth Proportional to 2,661,406.70, 3,992,110.05 and 978,161.90

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Solution

The fourth proportional to 2,661,406.70, 3,992,110.05 and 978,161.90 is: 1,467,242.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,406.70 : 3,992,110.05 = 978,161.90 : x
  2. Step 2: Convert to fraction form
    2,661,406.70/3,992,110.05 = 978,161.90/x
  3. Step 3: Cross multiply
    2,661,406.70x = 3,992,110.05 × 978,161.90
  4. Step 4: Simplify right side
    2,661,406.70x = 3,904,929,951,517.10
  5. Step 5: Solve for x
    x = 3,904,929,951,517.10/2,661,406.70
  6. Step 6: Final answer
    x = 1,467,242.85

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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.