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Finding the Third Proportional to 3,908,209 and 8,611,519

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Solution

The third proportional to 3,908,209 and 8,611,519 is: 18,974,998.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908,209 : 8,611,519 = 8,611,519 : x
  2. Step 2: Convert to fraction form
    3,908,209/8,611,519 = 8,611,519/x
  3. Step 3: Cross multiply
    3,908,209x = 8,611,519 × 8,611,519
  4. Step 4: Simplify right side
    3,908,209x = 74,158,259,487,361
  5. Step 5: Solve for x
    x = 74,158,259,487,361/3,908,209
  6. Step 6: Final answer
    x = 18,974,998.39

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.