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Finding the Third Proportional to 421,366 and 921,562

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Solution

The third proportional to 421,366 and 921,562 is: 2,015,531.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,366 : 921,562 = 921,562 : x
  2. Step 2: Convert to fraction form
    421,366/921,562 = 921,562/x
  3. Step 3: Cross multiply
    421,366x = 921,562 × 921,562
  4. Step 4: Simplify right side
    421,366x = 849,276,519,844
  5. Step 5: Solve for x
    x = 849,276,519,844/421,366
  6. Step 6: Final answer
    x = 2,015,531.68

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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.