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Finding the Third Proportional to 448,138.50 and 672,694.50

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Solution

The third proportional to 448,138.50 and 672,694.50 is: 1,009,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,138.50 : 672,694.50 = 672,694.50 : x
  2. Step 2: Convert to fraction form
    448,138.50/672,694.50 = 672,694.50/x
  3. Step 3: Cross multiply
    448,138.50x = 672,694.50 × 672,694.50
  4. Step 4: Simplify right side
    448,138.50x = 452,517,890,330.25
  5. Step 5: Solve for x
    x = 452,517,890,330.25/448,138.50
  6. Step 6: Final answer
    x = 1,009,772.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.