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Finding the Third Proportional to 318,240 and 693,288

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Solution

The third proportional to 318,240 and 693,288 is: 1,510,332.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,240 : 693,288 = 693,288 : x
  2. Step 2: Convert to fraction form
    318,240/693,288 = 693,288/x
  3. Step 3: Cross multiply
    318,240x = 693,288 × 693,288
  4. Step 4: Simplify right side
    318,240x = 480,648,250,944
  5. Step 5: Solve for x
    x = 480,648,250,944/318,240
  6. Step 6: Final answer
    x = 1,510,332.61

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.