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Finding the Third Proportional to 291,012 and 448,530

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Solution

The third proportional to 291,012 and 448,530 is: 691,308.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,012 : 448,530 = 448,530 : x
  2. Step 2: Convert to fraction form
    291,012/448,530 = 448,530/x
  3. Step 3: Cross multiply
    291,012x = 448,530 × 448,530
  4. Step 4: Simplify right side
    291,012x = 201,179,160,900
  5. Step 5: Solve for x
    x = 201,179,160,900/291,012
  6. Step 6: Final answer
    x = 691,308.82

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.