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Finding the Third Proportional to 289,230 and 622,858.50

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Solution

The third proportional to 289,230 and 622,858.50 is: 1,341,329.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,230 : 622,858.50 = 622,858.50 : x
  2. Step 2: Convert to fraction form
    289,230/622,858.50 = 622,858.50/x
  3. Step 3: Cross multiply
    289,230x = 622,858.50 × 622,858.50
  4. Step 4: Simplify right side
    289,230x = 387,952,711,022.25
  5. Step 5: Solve for x
    x = 387,952,711,022.25/289,230
  6. Step 6: Final answer
    x = 1,341,329.43

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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.