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Finding the Third Proportional to 378,126.50 and 585,780

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Solution

The third proportional to 378,126.50 and 585,780 is: 907,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,126.50 : 585,780 = 585,780 : x
  2. Step 2: Convert to fraction form
    378,126.50/585,780 = 585,780/x
  3. Step 3: Cross multiply
    378,126.50x = 585,780 × 585,780
  4. Step 4: Simplify right side
    378,126.50x = 343,138,208,400
  5. Step 5: Solve for x
    x = 343,138,208,400/378,126.50
  6. Step 6: Final answer
    x = 907,469.35

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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.