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Finding the Third Proportional to 450,138.38 and 690,194.25

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Solution

The third proportional to 450,138.38 and 690,194.25 is: 1,058,270.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,138.38 : 690,194.25 = 690,194.25 : x
  2. Step 2: Convert to fraction form
    450,138.38/690,194.25 = 690,194.25/x
  3. Step 3: Cross multiply
    450,138.38x = 690,194.25 × 690,194.25
  4. Step 4: Simplify right side
    450,138.38x = 476,368,102,733.06
  5. Step 5: Solve for x
    x = 476,368,102,733.06/450,138.38
  6. Step 6: Final answer
    x = 1,058,270.37

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.