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Finding the Fourth Proportional to 1,338,361.92, 1,846,942.56 and 734,788.80

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Solution

The fourth proportional to 1,338,361.92, 1,846,942.56 and 734,788.80 is: 1,014,010.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,361.92 : 1,846,942.56 = 734,788.80 : x
  2. Step 2: Convert to fraction form
    1,338,361.92/1,846,942.56 = 734,788.80/x
  3. Step 3: Cross multiply
    1,338,361.92x = 1,846,942.56 × 734,788.80
  4. Step 4: Simplify right side
    1,338,361.92x = 1,357,112,707,331.33
  5. Step 5: Solve for x
    x = 1,357,112,707,331.33/1,338,361.92
  6. Step 6: Final answer
    x = 1,014,010.25

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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.