Home / 720,693,976.80-1,081,040,965.20-489,410,853.60

Finding the Fourth Proportional to 720,693,976.80, 1,081,040,965.20 and 489,410,853.60

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Solution

The fourth proportional to 720,693,976.80, 1,081,040,965.20 and 489,410,853.60 is: 734,116,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,693,976.80 : 1,081,040,965.20 = 489,410,853.60 : x
  2. Step 2: Convert to fraction form
    720,693,976.80/1,081,040,965.20 = 489,410,853.60/x
  3. Step 3: Cross multiply
    720,693,976.80x = 1,081,040,965.20 × 489,410,853.60
  4. Step 4: Simplify right side
    720,693,976.80x = 529,073,181,555,099,968
  5. Step 5: Solve for x
    x = 529,073,181,555,099,968/720,693,976.80
  6. Step 6: Final answer
    x = 734,116,280.40

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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.