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Finding the Fourth Proportional to 8,197,028.40, 12,302,978.40 and 4,156,327.20

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Solution

The fourth proportional to 8,197,028.40, 12,302,978.40 and 4,156,327.20 is: 6,238,261.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,197,028.40 : 12,302,978.40 = 4,156,327.20 : x
  2. Step 2: Convert to fraction form
    8,197,028.40/12,302,978.40 = 4,156,327.20/x
  3. Step 3: Cross multiply
    8,197,028.40x = 12,302,978.40 × 4,156,327.20
  4. Step 4: Simplify right side
    8,197,028.40x = 51,135,203,764,932.48
  5. Step 5: Solve for x
    x = 51,135,203,764,932.48/8,197,028.40
  6. Step 6: Final answer
    x = 6,238,261.14

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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.