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Finding the Fourth Proportional to 3,451,978.02, 5,179,741.20 and 2,647,530.30

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Solution

The fourth proportional to 3,451,978.02, 5,179,741.20 and 2,647,530.30 is: 3,972,656.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451,978.02 : 5,179,741.20 = 2,647,530.30 : x
  2. Step 2: Convert to fraction form
    3,451,978.02/5,179,741.20 = 2,647,530.30/x
  3. Step 3: Cross multiply
    3,451,978.02x = 5,179,741.20 × 2,647,530.30
  4. Step 4: Simplify right side
    3,451,978.02x = 13,713,521,773,158.36
  5. Step 5: Solve for x
    x = 13,713,521,773,158.36/3,451,978.02
  6. Step 6: Final answer
    x = 3,972,656.17

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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.