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Finding the Third Proportional to 3,991,720 and 6,254,628

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Solution

The third proportional to 3,991,720 and 6,254,628 is: 9,800,379.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991,720 : 6,254,628 = 6,254,628 : x
  2. Step 2: Convert to fraction form
    3,991,720/6,254,628 = 6,254,628/x
  3. Step 3: Cross multiply
    3,991,720x = 6,254,628 × 6,254,628
  4. Step 4: Simplify right side
    3,991,720x = 39,120,371,418,384
  5. Step 5: Solve for x
    x = 39,120,371,418,384/3,991,720
  6. Step 6: Final answer
    x = 9,800,379.64

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.