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Finding the Third Proportional to 398,013.50 and 874,217.50

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Solution

The third proportional to 398,013.50 and 874,217.50 is: 1,920,176.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,013.50 : 874,217.50 = 874,217.50 : x
  2. Step 2: Convert to fraction form
    398,013.50/874,217.50 = 874,217.50/x
  3. Step 3: Cross multiply
    398,013.50x = 874,217.50 × 874,217.50
  4. Step 4: Simplify right side
    398,013.50x = 764,256,237,306.25
  5. Step 5: Solve for x
    x = 764,256,237,306.25/398,013.50
  6. Step 6: Final answer
    x = 1,920,176.67

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.