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Finding the Third Proportional to 7,221,517 and 15,859,993

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Solution

The third proportional to 7,221,517 and 15,859,993 is: 34,831,930.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221,517 : 15,859,993 = 15,859,993 : x
  2. Step 2: Convert to fraction form
    7,221,517/15,859,993 = 15,859,993/x
  3. Step 3: Cross multiply
    7,221,517x = 15,859,993 × 15,859,993
  4. Step 4: Simplify right side
    7,221,517x = 251,539,377,960,049
  5. Step 5: Solve for x
    x = 251,539,377,960,049/7,221,517
  6. Step 6: Final answer
    x = 34,831,930.46

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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.