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Finding the Third Proportional to 5,387,418 and 11,629,440

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Solution

The third proportional to 5,387,418 and 11,629,440 is: 25,103,653.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387,418 : 11,629,440 = 11,629,440 : x
  2. Step 2: Convert to fraction form
    5,387,418/11,629,440 = 11,629,440/x
  3. Step 3: Cross multiply
    5,387,418x = 11,629,440 × 11,629,440
  4. Step 4: Simplify right side
    5,387,418x = 135,243,874,713,600
  5. Step 5: Solve for x
    x = 135,243,874,713,600/5,387,418
  6. Step 6: Final answer
    x = 25,103,653.50

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.