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Finding the Third Proportional to 5,781,380 and 12,855,376

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Solution

The third proportional to 5,781,380 and 12,855,376 is: 28,584,990.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781,380 : 12,855,376 = 12,855,376 : x
  2. Step 2: Convert to fraction form
    5,781,380/12,855,376 = 12,855,376/x
  3. Step 3: Cross multiply
    5,781,380x = 12,855,376 × 12,855,376
  4. Step 4: Simplify right side
    5,781,380x = 165,260,692,101,376
  5. Step 5: Solve for x
    x = 165,260,692,101,376/5,781,380
  6. Step 6: Final answer
    x = 28,584,990.45

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.