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Finding the Third Proportional to 320,134.50 and 685,912.50

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Solution

The third proportional to 320,134.50 and 685,912.50 is: 1,469,619.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,134.50 : 685,912.50 = 685,912.50 : x
  2. Step 2: Convert to fraction form
    320,134.50/685,912.50 = 685,912.50/x
  3. Step 3: Cross multiply
    320,134.50x = 685,912.50 × 685,912.50
  4. Step 4: Simplify right side
    320,134.50x = 470,475,957,656.25
  5. Step 5: Solve for x
    x = 470,475,957,656.25/320,134.50
  6. Step 6: Final answer
    x = 1,469,619.67

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.