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Finding the Fourth Proportional to 3,858,266.64, 5,787,402.45 and 979,849.32

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Solution

The fourth proportional to 3,858,266.64, 5,787,402.45 and 979,849.32 is: 1,469,774.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858,266.64 : 5,787,402.45 = 979,849.32 : x
  2. Step 2: Convert to fraction form
    3,858,266.64/5,787,402.45 = 979,849.32/x
  3. Step 3: Cross multiply
    3,858,266.64x = 5,787,402.45 × 979,849.32
  4. Step 4: Simplify right side
    3,858,266.64x = 5,670,782,362,375.78
  5. Step 5: Solve for x
    x = 5,670,782,362,375.78/3,858,266.64
  6. Step 6: Final answer
    x = 1,469,774.61

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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.