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Finding the Third Proportional to 318,682 and 699,572

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Solution

The third proportional to 318,682 and 699,572 is: 1,535,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,682 : 699,572 = 699,572 : x
  2. Step 2: Convert to fraction form
    318,682/699,572 = 699,572/x
  3. Step 3: Cross multiply
    318,682x = 699,572 × 699,572
  4. Step 4: Simplify right side
    318,682x = 489,400,983,184
  5. Step 5: Solve for x
    x = 489,400,983,184/318,682
  6. Step 6: Final answer
    x = 1,535,703.25

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.