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Finding the Fourth Proportional to 3,664,410.80, 5,488,321.80 and 2,171,418.80

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Solution

The fourth proportional to 3,664,410.80, 5,488,321.80 and 2,171,418.80 is: 3,252,213.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664,410.80 : 5,488,321.80 = 2,171,418.80 : x
  2. Step 2: Convert to fraction form
    3,664,410.80/5,488,321.80 = 2,171,418.80/x
  3. Step 3: Cross multiply
    3,664,410.80x = 5,488,321.80 × 2,171,418.80
  4. Step 4: Simplify right side
    3,664,410.80x = 11,917,445,136,969.84
  5. Step 5: Solve for x
    x = 11,917,445,136,969.84/3,664,410.80
  6. Step 6: Final answer
    x = 3,252,213.19

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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.