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Finding the Third Proportional to 128,747,999 and 275,904,706

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Solution

The third proportional to 128,747,999 and 275,904,706 is: 591,258,950.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,747,999 : 275,904,706 = 275,904,706 : x
  2. Step 2: Convert to fraction form
    128,747,999/275,904,706 = 275,904,706/x
  3. Step 3: Cross multiply
    128,747,999x = 275,904,706 × 275,904,706
  4. Step 4: Simplify right side
    128,747,999x = 76,123,406,792,946,432
  5. Step 5: Solve for x
    x = 76,123,406,792,946,432/128,747,999
  6. Step 6: Final answer
    x = 591,258,950.70

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.