Home / 2,661,121.90-3,991,682.85-978,006.70

Finding the Fourth Proportional to 2,661,121.90, 3,991,682.85 and 978,006.70

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Solution

The fourth proportional to 2,661,121.90, 3,991,682.85 and 978,006.70 is: 1,467,010.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,121.90 : 3,991,682.85 = 978,006.70 : x
  2. Step 2: Convert to fraction form
    2,661,121.90/3,991,682.85 = 978,006.70/x
  3. Step 3: Cross multiply
    2,661,121.90x = 3,991,682.85 × 978,006.70
  4. Step 4: Simplify right side
    2,661,121.90x = 3,903,892,571,575.10
  5. Step 5: Solve for x
    x = 3,903,892,571,575.10/2,661,121.90
  6. Step 6: Final answer
    x = 1,467,010.05

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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.