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Finding the Third Proportional to 288,153 and 620,694

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Solution

The third proportional to 288,153 and 620,694 is: 1,337,001.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,153 : 620,694 = 620,694 : x
  2. Step 2: Convert to fraction form
    288,153/620,694 = 620,694/x
  3. Step 3: Cross multiply
    288,153x = 620,694 × 620,694
  4. Step 4: Simplify right side
    288,153x = 385,261,041,636
  5. Step 5: Solve for x
    x = 385,261,041,636/288,153
  6. Step 6: Final answer
    x = 1,337,001.67

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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.