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Finding the Third Proportional to 421,402 and 928,696

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Solution

The third proportional to 421,402 and 928,696 is: 2,046,682.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,402 : 928,696 = 928,696 : x
  2. Step 2: Convert to fraction form
    421,402/928,696 = 928,696/x
  3. Step 3: Cross multiply
    421,402x = 928,696 × 928,696
  4. Step 4: Simplify right side
    421,402x = 862,476,260,416
  5. Step 5: Solve for x
    x = 862,476,260,416/421,402
  6. Step 6: Final answer
    x = 2,046,682.88

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.