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Finding the Third Proportional to 8,408,988 and 12,991,752

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Solution

The third proportional to 8,408,988 and 12,991,752 is: 20,072,049.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408,988 : 12,991,752 = 12,991,752 : x
  2. Step 2: Convert to fraction form
    8,408,988/12,991,752 = 12,991,752/x
  3. Step 3: Cross multiply
    8,408,988x = 12,991,752 × 12,991,752
  4. Step 4: Simplify right side
    8,408,988x = 168,785,620,029,504
  5. Step 5: Solve for x
    x = 168,785,620,029,504/8,408,988
  6. Step 6: Final answer
    x = 20,072,049.10

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.