Home / 839,876,856.80-1,259,815,285.20-792,259,743.20

Finding the Fourth Proportional to 839,876,856.80, 1,259,815,285.20 and 792,259,743.20

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Solution

The fourth proportional to 839,876,856.80, 1,259,815,285.20 and 792,259,743.20 is: 1,188,389,614.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,876,856.80 : 1,259,815,285.20 = 792,259,743.20 : x
  2. Step 2: Convert to fraction form
    839,876,856.80/1,259,815,285.20 = 792,259,743.20/x
  3. Step 3: Cross multiply
    839,876,856.80x = 1,259,815,285.20 × 792,259,743.20
  4. Step 4: Simplify right side
    839,876,856.80x = 998,100,934,331,986,816
  5. Step 5: Solve for x
    x = 998,100,934,331,986,816/839,876,856.80
  6. Step 6: Final answer
    x = 1,188,389,614.80

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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.