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Finding the Third Proportional to 258,485 and 558,481

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Solution

The third proportional to 258,485 and 558,481 is: 1,206,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,485 : 558,481 = 558,481 : x
  2. Step 2: Convert to fraction form
    258,485/558,481 = 558,481/x
  3. Step 3: Cross multiply
    258,485x = 558,481 × 558,481
  4. Step 4: Simplify right side
    258,485x = 311,901,027,361
  5. Step 5: Solve for x
    x = 311,901,027,361/258,485
  6. Step 6: Final answer
    x = 1,206,650.40

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.