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Finding the Third Proportional to 641,406 and 1,403,100

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Solution

The third proportional to 641,406 and 1,403,100 is: 3,069,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,406 : 1,403,100 = 1,403,100 : x
  2. Step 2: Convert to fraction form
    641,406/1,403,100 = 1,403,100/x
  3. Step 3: Cross multiply
    641,406x = 1,403,100 × 1,403,100
  4. Step 4: Simplify right side
    641,406x = 1,968,689,610,000
  5. Step 5: Solve for x
    x = 1,968,689,610,000/641,406
  6. Step 6: Final answer
    x = 3,069,334.57

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.