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Finding the Third Proportional to 321,880.50 and 692,847

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Solution

The third proportional to 321,880.50 and 692,847 is: 1,491,351.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,880.50 : 692,847 = 692,847 : x
  2. Step 2: Convert to fraction form
    321,880.50/692,847 = 692,847/x
  3. Step 3: Cross multiply
    321,880.50x = 692,847 × 692,847
  4. Step 4: Simplify right side
    321,880.50x = 480,036,965,409
  5. Step 5: Solve for x
    x = 480,036,965,409/321,880.50
  6. Step 6: Final answer
    x = 1,491,351.50

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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.