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Finding the Third Proportional to 409,390 and 888,359

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Solution

The third proportional to 409,390 and 888,359 is: 1,927,701.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,390 : 888,359 = 888,359 : x
  2. Step 2: Convert to fraction form
    409,390/888,359 = 888,359/x
  3. Step 3: Cross multiply
    409,390x = 888,359 × 888,359
  4. Step 4: Simplify right side
    409,390x = 789,181,712,881
  5. Step 5: Solve for x
    x = 789,181,712,881/409,390
  6. Step 6: Final answer
    x = 1,927,701.49

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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.