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Finding the Third Proportional to 3,936,640 and 6,428,130

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Solution

The third proportional to 3,936,640 and 6,428,130 is: 10,496,478.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936,640 : 6,428,130 = 6,428,130 : x
  2. Step 2: Convert to fraction form
    3,936,640/6,428,130 = 6,428,130/x
  3. Step 3: Cross multiply
    3,936,640x = 6,428,130 × 6,428,130
  4. Step 4: Simplify right side
    3,936,640x = 41,320,855,296,900
  5. Step 5: Solve for x
    x = 41,320,855,296,900/3,936,640
  6. Step 6: Final answer
    x = 10,496,478.04

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.