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Finding the Third Proportional to 2,021,215 and 4,378,895

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Solution

The third proportional to 2,021,215 and 4,378,895 is: 9,486,730.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021,215 : 4,378,895 = 4,378,895 : x
  2. Step 2: Convert to fraction form
    2,021,215/4,378,895 = 4,378,895/x
  3. Step 3: Cross multiply
    2,021,215x = 4,378,895 × 4,378,895
  4. Step 4: Simplify right side
    2,021,215x = 19,174,721,421,025
  5. Step 5: Solve for x
    x = 19,174,721,421,025/2,021,215
  6. Step 6: Final answer
    x = 9,486,730.22

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.