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Finding the Fourth Proportional to 12,420,676, 18,631,014 and 3,445,228

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Solution

The fourth proportional to 12,420,676, 18,631,014 and 3,445,228 is: 5,167,842

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420,676 : 18,631,014 = 3,445,228 : x
  2. Step 2: Convert to fraction form
    12,420,676/18,631,014 = 3,445,228/x
  3. Step 3: Cross multiply
    12,420,676x = 18,631,014 × 3,445,228
  4. Step 4: Simplify right side
    12,420,676x = 64,188,091,101,192
  5. Step 5: Solve for x
    x = 64,188,091,101,192/12,420,676
  6. Step 6: Final answer
    x = 5,167,842

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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.