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Finding the Third Proportional to 289,161 and 622,630.50

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Solution

The third proportional to 289,161 and 622,630.50 is: 1,340,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,161 : 622,630.50 = 622,630.50 : x
  2. Step 2: Convert to fraction form
    289,161/622,630.50 = 622,630.50/x
  3. Step 3: Cross multiply
    289,161x = 622,630.50 × 622,630.50
  4. Step 4: Simplify right side
    289,161x = 387,668,739,530.25
  5. Step 5: Solve for x
    x = 387,668,739,530.25/289,161
  6. Step 6: Final answer
    x = 1,340,667.45

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.