Home / 667,608.80-1,001,413.20-489,149.60

Finding the Fourth Proportional to 667,608.80, 1,001,413.20 and 489,149.60

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Solution

The fourth proportional to 667,608.80, 1,001,413.20 and 489,149.60 is: 733,724.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,608.80 : 1,001,413.20 = 489,149.60 : x
  2. Step 2: Convert to fraction form
    667,608.80/1,001,413.20 = 489,149.60/x
  3. Step 3: Cross multiply
    667,608.80x = 1,001,413.20 × 489,149.60
  4. Step 4: Simplify right side
    667,608.80x = 489,840,866,214.72
  5. Step 5: Solve for x
    x = 489,840,866,214.72/667,608.80
  6. Step 6: Final answer
    x = 733,724.40

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1.5x scale

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.