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Finding the Third Proportional to 312,984 and 670,234.50

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Solution

The third proportional to 312,984 and 670,234.50 is: 1,435,262.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,984 : 670,234.50 = 670,234.50 : x
  2. Step 2: Convert to fraction form
    312,984/670,234.50 = 670,234.50/x
  3. Step 3: Cross multiply
    312,984x = 670,234.50 × 670,234.50
  4. Step 4: Simplify right side
    312,984x = 449,214,284,990.25
  5. Step 5: Solve for x
    x = 449,214,284,990.25/312,984
  6. Step 6: Final answer
    x = 1,435,262.78

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.