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Finding the Third Proportional to 186,728 and 409,738

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Solution

The third proportional to 186,728 and 409,738 is: 899,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,728 : 409,738 = 409,738 : x
  2. Step 2: Convert to fraction form
    186,728/409,738 = 409,738/x
  3. Step 3: Cross multiply
    186,728x = 409,738 × 409,738
  4. Step 4: Simplify right side
    186,728x = 167,885,228,644
  5. Step 5: Solve for x
    x = 167,885,228,644/186,728
  6. Step 6: Final answer
    x = 899,089.74

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.