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Finding the Third Proportional to 328,299 and 705,640.50

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Solution

The third proportional to 328,299 and 705,640.50 is: 1,516,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,299 : 705,640.50 = 705,640.50 : x
  2. Step 2: Convert to fraction form
    328,299/705,640.50 = 705,640.50/x
  3. Step 3: Cross multiply
    328,299x = 705,640.50 × 705,640.50
  4. Step 4: Simplify right side
    328,299x = 497,928,515,240.25
  5. Step 5: Solve for x
    x = 497,928,515,240.25/328,299
  6. Step 6: Final answer
    x = 1,516,692.15

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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.