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Finding the Third Proportional to 7,887,408 and 12,698,520

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Solution

The third proportional to 7,887,408 and 12,698,520 is: 20,444,284.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887,408 : 12,698,520 = 12,698,520 : x
  2. Step 2: Convert to fraction form
    7,887,408/12,698,520 = 12,698,520/x
  3. Step 3: Cross multiply
    7,887,408x = 12,698,520 × 12,698,520
  4. Step 4: Simplify right side
    7,887,408x = 161,252,410,190,400
  5. Step 5: Solve for x
    x = 161,252,410,190,400/7,887,408
  6. Step 6: Final answer
    x = 20,444,284.13

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.