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Finding the Third Proportional to 939,217.50 and 1,999,890

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Solution

The third proportional to 939,217.50 and 1,999,890 is: 4,258,395.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,217.50 : 1,999,890 = 1,999,890 : x
  2. Step 2: Convert to fraction form
    939,217.50/1,999,890 = 1,999,890/x
  3. Step 3: Cross multiply
    939,217.50x = 1,999,890 × 1,999,890
  4. Step 4: Simplify right side
    939,217.50x = 3,999,560,012,100
  5. Step 5: Solve for x
    x = 3,999,560,012,100/939,217.50
  6. Step 6: Final answer
    x = 4,258,395.96

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.