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Finding the Fourth Proportional to 884,413.80, 1,326,880.98 and 285,363.72

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Solution

The fourth proportional to 884,413.80, 1,326,880.98 and 285,363.72 is: 428,129.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,413.80 : 1,326,880.98 = 285,363.72 : x
  2. Step 2: Convert to fraction form
    884,413.80/1,326,880.98 = 285,363.72/x
  3. Step 3: Cross multiply
    884,413.80x = 1,326,880.98 × 285,363.72
  4. Step 4: Simplify right side
    884,413.80x = 378,643,692,450.05
  5. Step 5: Solve for x
    x = 378,643,692,450.05/884,413.80
  6. Step 6: Final answer
    x = 428,129.56

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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.