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Finding the Third Proportional to 378,400 and 585,960

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Solution

The third proportional to 378,400 and 585,960 is: 907,370.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,400 : 585,960 = 585,960 : x
  2. Step 2: Convert to fraction form
    378,400/585,960 = 585,960/x
  3. Step 3: Cross multiply
    378,400x = 585,960 × 585,960
  4. Step 4: Simplify right side
    378,400x = 343,349,121,600
  5. Step 5: Solve for x
    x = 343,349,121,600/378,400
  6. Step 6: Final answer
    x = 907,370.83

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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.