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Finding the Third Proportional to 3,990,138 and 6,191,051

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Solution

The third proportional to 3,990,138 and 6,191,051 is: 9,605,961.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,138 : 6,191,051 = 6,191,051 : x
  2. Step 2: Convert to fraction form
    3,990,138/6,191,051 = 6,191,051/x
  3. Step 3: Cross multiply
    3,990,138x = 6,191,051 × 6,191,051
  4. Step 4: Simplify right side
    3,990,138x = 38,329,112,484,601
  5. Step 5: Solve for x
    x = 38,329,112,484,601/3,990,138
  6. Step 6: Final answer
    x = 9,605,961.62

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.