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Finding the Third Proportional to 310,450 and 670,730

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Solution

The third proportional to 310,450 and 670,730 is: 1,449,118.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,450 : 670,730 = 670,730 : x
  2. Step 2: Convert to fraction form
    310,450/670,730 = 670,730/x
  3. Step 3: Cross multiply
    310,450x = 670,730 × 670,730
  4. Step 4: Simplify right side
    310,450x = 449,878,732,900
  5. Step 5: Solve for x
    x = 449,878,732,900/310,450
  6. Step 6: Final answer
    x = 1,449,118.16

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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.