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Finding the Third Proportional to 638,725.50 and 1,390,851

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Solution

The third proportional to 638,725.50 and 1,390,851 is: 3,028,635.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,725.50 : 1,390,851 = 1,390,851 : x
  2. Step 2: Convert to fraction form
    638,725.50/1,390,851 = 1,390,851/x
  3. Step 3: Cross multiply
    638,725.50x = 1,390,851 × 1,390,851
  4. Step 4: Simplify right side
    638,725.50x = 1,934,466,504,201
  5. Step 5: Solve for x
    x = 1,934,466,504,201/638,725.50
  6. Step 6: Final answer
    x = 3,028,635.16

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.