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Finding the Third Proportional to 311,392 and 481,616

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Solution

The third proportional to 311,392 and 481,616 is: 744,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,392 : 481,616 = 481,616 : x
  2. Step 2: Convert to fraction form
    311,392/481,616 = 481,616/x
  3. Step 3: Cross multiply
    311,392x = 481,616 × 481,616
  4. Step 4: Simplify right side
    311,392x = 231,953,971,456
  5. Step 5: Solve for x
    x = 231,953,971,456/311,392
  6. Step 6: Final answer
    x = 744,893.80

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.