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Finding the Fourth Proportional to 1,438,724.93, 1,985,440.61 and 794,145.27

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Solution

The fourth proportional to 1,438,724.93, 1,985,440.61 and 794,145.27 is: 1,095,920.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,724.93 : 1,985,440.61 = 794,145.27 : x
  2. Step 2: Convert to fraction form
    1,438,724.93/1,985,440.61 = 794,145.27/x
  3. Step 3: Cross multiply
    1,438,724.93x = 1,985,440.61 × 794,145.27
  4. Step 4: Simplify right side
    1,438,724.93x = 1,576,728,269,297.41
  5. Step 5: Solve for x
    x = 1,576,728,269,297.41/1,438,724.93
  6. Step 6: Final answer
    x = 1,095,920.59

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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.