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Finding the Fourth Proportional to 3,985,824.60, 5,978,736.90 and 2,710,366.20

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Solution

The fourth proportional to 3,985,824.60, 5,978,736.90 and 2,710,366.20 is: 4,065,549.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,824.60 : 5,978,736.90 = 2,710,366.20 : x
  2. Step 2: Convert to fraction form
    3,985,824.60/5,978,736.90 = 2,710,366.20/x
  3. Step 3: Cross multiply
    3,985,824.60x = 5,978,736.90 × 2,710,366.20
  4. Step 4: Simplify right side
    3,985,824.60x = 16,204,566,412,452.78
  5. Step 5: Solve for x
    x = 16,204,566,412,452.78/3,985,824.60
  6. Step 6: Final answer
    x = 4,065,549.30

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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.