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Finding the Third Proportional to 642,336.50 and 1,383,331

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Solution

The third proportional to 642,336.50 and 1,383,331 is: 2,979,131.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,336.50 : 1,383,331 = 1,383,331 : x
  2. Step 2: Convert to fraction form
    642,336.50/1,383,331 = 1,383,331/x
  3. Step 3: Cross multiply
    642,336.50x = 1,383,331 × 1,383,331
  4. Step 4: Simplify right side
    642,336.50x = 1,913,604,655,561
  5. Step 5: Solve for x
    x = 1,913,604,655,561/642,336.50
  6. Step 6: Final answer
    x = 2,979,131.12

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.