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Finding the Third Proportional to 423,516.38 and 636,216.75

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Solution

The third proportional to 423,516.38 and 636,216.75 is: 955,740.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,516.38 : 636,216.75 = 636,216.75 : x
  2. Step 2: Convert to fraction form
    423,516.38/636,216.75 = 636,216.75/x
  3. Step 3: Cross multiply
    423,516.38x = 636,216.75 × 636,216.75
  4. Step 4: Simplify right side
    423,516.38x = 404,771,752,980.56
  5. Step 5: Solve for x
    x = 404,771,752,980.56/423,516.38
  6. Step 6: Final answer
    x = 955,740.50

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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.