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Finding the Third Proportional to 6,408,321 and 9,919,311

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Solution

The third proportional to 6,408,321 and 9,919,311 is: 15,353,901.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,408,321 : 9,919,311 = 9,919,311 : x
  2. Step 2: Convert to fraction form
    6,408,321/9,919,311 = 9,919,311/x
  3. Step 3: Cross multiply
    6,408,321x = 9,919,311 × 9,919,311
  4. Step 4: Simplify right side
    6,408,321x = 98,392,730,714,721
  5. Step 5: Solve for x
    x = 98,392,730,714,721/6,408,321
  6. Step 6: Final answer
    x = 15,353,901.70

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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.