Home / 1,165,261,121.87-1,608,060,993.37-629,412,784.39

Finding the Fourth Proportional to 1,165,261,121.87, 1,608,060,993.37 and 629,412,784.39

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Solution

The fourth proportional to 1,165,261,121.87, 1,608,060,993.37 and 629,412,784.39 is: 868,589,990.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165,261,121.87 : 1,608,060,993.37 = 629,412,784.39 : x
  2. Step 2: Convert to fraction form
    1,165,261,121.87/1,608,060,993.37 = 629,412,784.39/x
  3. Step 3: Cross multiply
    1,165,261,121.87x = 1,608,060,993.37 × 629,412,784.39
  4. Step 4: Simplify right side
    1,165,261,121.87x = 1,012,134,147,300,367,488
  5. Step 5: Solve for x
    x = 1,012,134,147,300,367,488/1,165,261,121.87
  6. Step 6: Final answer
    x = 868,589,990.95

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Double scale
Find fourth proportional to 1,165,261,122.87, 1,608,060,994.75 and 629,412,785.39
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1.5x scale

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.