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Finding the Third Proportional to 547,128 and 818,505

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Solution

The third proportional to 547,128 and 818,505 is: 1,224,485.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,128 : 818,505 = 818,505 : x
  2. Step 2: Convert to fraction form
    547,128/818,505 = 818,505/x
  3. Step 3: Cross multiply
    547,128x = 818,505 × 818,505
  4. Step 4: Simplify right side
    547,128x = 669,950,435,025
  5. Step 5: Solve for x
    x = 669,950,435,025/547,128
  6. Step 6: Final answer
    x = 1,224,485.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.