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Finding the Fourth Proportional to 576,072.80, 864,109.20 and 543,413.60

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Solution

The fourth proportional to 576,072.80, 864,109.20 and 543,413.60 is: 815,120.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,072.80 : 864,109.20 = 543,413.60 : x
  2. Step 2: Convert to fraction form
    576,072.80/864,109.20 = 543,413.60/x
  3. Step 3: Cross multiply
    576,072.80x = 864,109.20 × 543,413.60
  4. Step 4: Simplify right side
    576,072.80x = 469,568,691,165.12
  5. Step 5: Solve for x
    x = 469,568,691,165.12/576,072.80
  6. Step 6: Final answer
    x = 815,120.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.