Home / 2,661,129.90-3,991,694.85-978,014.70

Finding the Fourth Proportional to 2,661,129.90, 3,991,694.85 and 978,014.70

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Solution

The fourth proportional to 2,661,129.90, 3,991,694.85 and 978,014.70 is: 1,467,022.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,129.90 : 3,991,694.85 = 978,014.70 : x
  2. Step 2: Convert to fraction form
    2,661,129.90/3,991,694.85 = 978,014.70/x
  3. Step 3: Cross multiply
    2,661,129.90x = 3,991,694.85 × 978,014.70
  4. Step 4: Simplify right side
    2,661,129.90x = 3,903,936,241,214.30
  5. Step 5: Solve for x
    x = 3,903,936,241,214.30/2,661,129.90
  6. Step 6: Final answer
    x = 1,467,022.05

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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.