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Finding the Third Proportional to 322,329 and 708,990

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Solution

The third proportional to 322,329 and 708,990 is: 1,559,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,329 : 708,990 = 708,990 : x
  2. Step 2: Convert to fraction form
    322,329/708,990 = 708,990/x
  3. Step 3: Cross multiply
    322,329x = 708,990 × 708,990
  4. Step 4: Simplify right side
    322,329x = 502,666,820,100
  5. Step 5: Solve for x
    x = 502,666,820,100/322,329
  6. Step 6: Final answer
    x = 1,559,483.70

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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.