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Finding the Third Proportional to 311,957 and 683,287

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Solution

The third proportional to 311,957 and 683,287 is: 1,496,620.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,957 : 683,287 = 683,287 : x
  2. Step 2: Convert to fraction form
    311,957/683,287 = 683,287/x
  3. Step 3: Cross multiply
    311,957x = 683,287 × 683,287
  4. Step 4: Simplify right side
    311,957x = 466,881,124,369
  5. Step 5: Solve for x
    x = 466,881,124,369/311,957
  6. Step 6: Final answer
    x = 1,496,620.13

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.