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Finding the Third Proportional to 421,700 and 907,876

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Solution

The third proportional to 421,700 and 907,876 is: 1,954,562.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,700 : 907,876 = 907,876 : x
  2. Step 2: Convert to fraction form
    421,700/907,876 = 907,876/x
  3. Step 3: Cross multiply
    421,700x = 907,876 × 907,876
  4. Step 4: Simplify right side
    421,700x = 824,238,831,376
  5. Step 5: Solve for x
    x = 824,238,831,376/421,700
  6. Step 6: Final answer
    x = 1,954,562.09

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.