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Finding the Third Proportional to 320,825 and 448,520

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Solution

The third proportional to 320,825 and 448,520 is: 627,040.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,825 : 448,520 = 448,520 : x
  2. Step 2: Convert to fraction form
    320,825/448,520 = 448,520/x
  3. Step 3: Cross multiply
    320,825x = 448,520 × 448,520
  4. Step 4: Simplify right side
    320,825x = 201,170,190,400
  5. Step 5: Solve for x
    x = 201,170,190,400/320,825
  6. Step 6: Final answer
    x = 627,040.26

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.