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Finding the Third Proportional to 868,139.44 and 1,869,618.38

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Solution

The third proportional to 868,139.44 and 1,869,618.38 is: 4,026,395.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,139.44 : 1,869,618.38 = 1,869,618.38 : x
  2. Step 2: Convert to fraction form
    868,139.44/1,869,618.38 = 1,869,618.38/x
  3. Step 3: Cross multiply
    868,139.44x = 1,869,618.38 × 1,869,618.38
  4. Step 4: Simplify right side
    868,139.44x = 3,495,472,868,137.64
  5. Step 5: Solve for x
    x = 3,495,472,868,137.64/868,139.44
  6. Step 6: Final answer
    x = 4,026,395.67

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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.