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Finding the Fourth Proportional to 1,338,393.92, 1,846,986.72 and 734,820.80

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Solution

The fourth proportional to 1,338,393.92, 1,846,986.72 and 734,820.80 is: 1,014,054.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,393.92 : 1,846,986.72 = 734,820.80 : x
  2. Step 2: Convert to fraction form
    1,338,393.92/1,846,986.72 = 734,820.80/x
  3. Step 3: Cross multiply
    1,338,393.92x = 1,846,986.72 × 734,820.80
  4. Step 4: Simplify right side
    1,338,393.92x = 1,357,204,259,179.78
  5. Step 5: Solve for x
    x = 1,357,204,259,179.78/1,338,393.92
  6. Step 6: Final answer
    x = 1,014,054.41

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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.