Home / 831,458.72-1,147,413.90-449,485.52

Finding the Fourth Proportional to 831,458.72, 1,147,413.90 and 449,485.52

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Solution

The fourth proportional to 831,458.72, 1,147,413.90 and 449,485.52 is: 620,290.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,458.72 : 1,147,413.90 = 449,485.52 : x
  2. Step 2: Convert to fraction form
    831,458.72/1,147,413.90 = 449,485.52/x
  3. Step 3: Cross multiply
    831,458.72x = 1,147,413.90 × 449,485.52
  4. Step 4: Simplify right side
    831,458.72x = 515,745,933,496.73
  5. Step 5: Solve for x
    x = 515,745,933,496.73/831,458.72
  6. Step 6: Final answer
    x = 620,290.49

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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.