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Finding the Third Proportional to 7,781,676 and 12,431,394

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Solution

The third proportional to 7,781,676 and 12,431,394 is: 19,859,418.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781,676 : 12,431,394 = 12,431,394 : x
  2. Step 2: Convert to fraction form
    7,781,676/12,431,394 = 12,431,394/x
  3. Step 3: Cross multiply
    7,781,676x = 12,431,394 × 12,431,394
  4. Step 4: Simplify right side
    7,781,676x = 154,539,556,783,236
  5. Step 5: Solve for x
    x = 154,539,556,783,236/7,781,676
  6. Step 6: Final answer
    x = 19,859,418.05

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.