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Finding the Third Proportional to 453,649.50 and 670,128.75

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Solution

The third proportional to 453,649.50 and 670,128.75 is: 989,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,649.50 : 670,128.75 = 670,128.75 : x
  2. Step 2: Convert to fraction form
    453,649.50/670,128.75 = 670,128.75/x
  3. Step 3: Cross multiply
    453,649.50x = 670,128.75 × 670,128.75
  4. Step 4: Simplify right side
    453,649.50x = 449,072,541,576.56
  5. Step 5: Solve for x
    x = 449,072,541,576.56/453,649.50
  6. Step 6: Final answer
    x = 989,910.80

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.