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Finding the Third Proportional to 490,678.50 and 740,682.75

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Solution

The third proportional to 490,678.50 and 740,682.75 is: 1,118,065.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,678.50 : 740,682.75 = 740,682.75 : x
  2. Step 2: Convert to fraction form
    490,678.50/740,682.75 = 740,682.75/x
  3. Step 3: Cross multiply
    490,678.50x = 740,682.75 × 740,682.75
  4. Step 4: Simplify right side
    490,678.50x = 548,610,936,147.56
  5. Step 5: Solve for x
    x = 548,610,936,147.56/490,678.50
  6. Step 6: Final answer
    x = 1,118,065.98

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.