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Finding the Third Proportional to 7,721,388 and 16,639,551

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Solution

The third proportional to 7,721,388 and 16,639,551 is: 35,858,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721,388 : 16,639,551 = 16,639,551 : x
  2. Step 2: Convert to fraction form
    7,721,388/16,639,551 = 16,639,551/x
  3. Step 3: Cross multiply
    7,721,388x = 16,639,551 × 16,639,551
  4. Step 4: Simplify right side
    7,721,388x = 276,874,657,481,601
  5. Step 5: Solve for x
    x = 276,874,657,481,601/7,721,388
  6. Step 6: Final answer
    x = 35,858,145.90

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.