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Finding the Third Proportional to 7,918,478 and 12,241,611

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Solution

The third proportional to 7,918,478 and 12,241,611 is: 18,924,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918,478 : 12,241,611 = 12,241,611 : x
  2. Step 2: Convert to fraction form
    7,918,478/12,241,611 = 12,241,611/x
  3. Step 3: Cross multiply
    7,918,478x = 12,241,611 × 12,241,611
  4. Step 4: Simplify right side
    7,918,478x = 149,857,039,875,321
  5. Step 5: Solve for x
    x = 149,857,039,875,321/7,918,478
  6. Step 6: Final answer
    x = 18,924,980.26

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.