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Finding the Third Proportional to 4,621,917 and 7,212,678

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Solution

The third proportional to 4,621,917 and 7,212,678 is: 11,255,659.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,621,917 : 7,212,678 = 7,212,678 : x
  2. Step 2: Convert to fraction form
    4,621,917/7,212,678 = 7,212,678/x
  3. Step 3: Cross multiply
    4,621,917x = 7,212,678 × 7,212,678
  4. Step 4: Simplify right side
    4,621,917x = 52,022,723,931,684
  5. Step 5: Solve for x
    x = 52,022,723,931,684/4,621,917
  6. Step 6: Final answer
    x = 11,255,659.49

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.