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Finding the Third Proportional to 321,790 and 482,064

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Solution

The third proportional to 321,790 and 482,064 is: 722,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,790 : 482,064 = 482,064 : x
  2. Step 2: Convert to fraction form
    321,790/482,064 = 482,064/x
  3. Step 3: Cross multiply
    321,790x = 482,064 × 482,064
  4. Step 4: Simplify right side
    321,790x = 232,385,700,096
  5. Step 5: Solve for x
    x = 232,385,700,096/321,790
  6. Step 6: Final answer
    x = 722,165.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.