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Finding the Third Proportional to 309,346 and 675,508

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Solution

The third proportional to 309,346 and 675,508 is: 1,475,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,346 : 675,508 = 675,508 : x
  2. Step 2: Convert to fraction form
    309,346/675,508 = 675,508/x
  3. Step 3: Cross multiply
    309,346x = 675,508 × 675,508
  4. Step 4: Simplify right side
    309,346x = 456,311,058,064
  5. Step 5: Solve for x
    x = 456,311,058,064/309,346
  6. Step 6: Final answer
    x = 1,475,083.10

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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.