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Finding the Third Proportional to 449,226 and 678,516

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Solution

The third proportional to 449,226 and 678,516 is: 1,024,838.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,226 : 678,516 = 678,516 : x
  2. Step 2: Convert to fraction form
    449,226/678,516 = 678,516/x
  3. Step 3: Cross multiply
    449,226x = 678,516 × 678,516
  4. Step 4: Simplify right side
    449,226x = 460,383,962,256
  5. Step 5: Solve for x
    x = 460,383,962,256/449,226
  6. Step 6: Final answer
    x = 1,024,838.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.