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Finding the Fourth Proportional to 3,978,077.85, 5,489,769.38 and 2,324,322.09

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Solution

The fourth proportional to 3,978,077.85, 5,489,769.38 and 2,324,322.09 is: 3,207,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,978,077.85 : 5,489,769.38 = 2,324,322.09 : x
  2. Step 2: Convert to fraction form
    3,978,077.85/5,489,769.38 = 2,324,322.09/x
  3. Step 3: Cross multiply
    3,978,077.85x = 5,489,769.38 × 2,324,322.09
  4. Step 4: Simplify right side
    3,978,077.85x = 12,759,992,227,317.99
  5. Step 5: Solve for x
    x = 12,759,992,227,317.99/3,978,077.85
  6. Step 6: Final answer
    x = 3,207,577.30

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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.