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Finding the Fourth Proportional to 576,413.32, 795,530.34 and 321,781

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Solution

The fourth proportional to 576,413.32, 795,530.34 and 321,781 is: 444,102.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,413.32 : 795,530.34 = 321,781 : x
  2. Step 2: Convert to fraction form
    576,413.32/795,530.34 = 321,781/x
  3. Step 3: Cross multiply
    576,413.32x = 795,530.34 × 321,781
  4. Step 4: Simplify right side
    576,413.32x = 255,986,548,335.54
  5. Step 5: Solve for x
    x = 255,986,548,335.54/576,413.32
  6. Step 6: Final answer
    x = 444,102.42

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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.