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Finding the Third Proportional to 409,902 and 890,724

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Solution

The third proportional to 409,902 and 890,724 is: 1,935,558.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,902 : 890,724 = 890,724 : x
  2. Step 2: Convert to fraction form
    409,902/890,724 = 890,724/x
  3. Step 3: Cross multiply
    409,902x = 890,724 × 890,724
  4. Step 4: Simplify right side
    409,902x = 793,389,244,176
  5. Step 5: Solve for x
    x = 793,389,244,176/409,902
  6. Step 6: Final answer
    x = 1,935,558.36

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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.