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Finding the Third Proportional to 7,120,438 and 11,018,559

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Solution

The third proportional to 7,120,438 and 11,018,559 is: 17,050,726.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120,438 : 11,018,559 = 11,018,559 : x
  2. Step 2: Convert to fraction form
    7,120,438/11,018,559 = 11,018,559/x
  3. Step 3: Cross multiply
    7,120,438x = 11,018,559 × 11,018,559
  4. Step 4: Simplify right side
    7,120,438x = 121,408,642,436,481
  5. Step 5: Solve for x
    x = 121,408,642,436,481/7,120,438
  6. Step 6: Final answer
    x = 17,050,726.72

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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.