Home / 821,661.20-1,233,413.40-489,424.40

Finding the Fourth Proportional to 821,661.20, 1,233,413.40 and 489,424.40

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Solution

The fourth proportional to 821,661.20, 1,233,413.40 and 489,424.40 is: 734,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,661.20 : 1,233,413.40 = 489,424.40 : x
  2. Step 2: Convert to fraction form
    821,661.20/1,233,413.40 = 489,424.40/x
  3. Step 3: Cross multiply
    821,661.20x = 1,233,413.40 × 489,424.40
  4. Step 4: Simplify right side
    821,661.20x = 603,662,613,246.96
  5. Step 5: Solve for x
    x = 603,662,613,246.96/821,661.20
  6. Step 6: Final answer
    x = 734,685.55

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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.