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Finding the Fourth Proportional to 1,259,738.22, 1,738,662.06 and 743,454.96

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Solution

The fourth proportional to 1,259,738.22, 1,738,662.06 and 743,454.96 is: 1,026,099.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,738.22 : 1,738,662.06 = 743,454.96 : x
  2. Step 2: Convert to fraction form
    1,259,738.22/1,738,662.06 = 743,454.96/x
  3. Step 3: Cross multiply
    1,259,738.22x = 1,738,662.06 × 743,454.96
  4. Step 4: Simplify right side
    1,259,738.22x = 1,292,616,932,270.82
  5. Step 5: Solve for x
    x = 1,292,616,932,270.82/1,259,738.22
  6. Step 6: Final answer
    x = 1,026,099.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.