Home / 839,809,321.70-1,259,713,982.55-768,383,651.30

Finding the Fourth Proportional to 839,809,321.70, 1,259,713,982.55 and 768,383,651.30

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Solution

The fourth proportional to 839,809,321.70, 1,259,713,982.55 and 768,383,651.30 is: 1,152,575,476.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,321.70 : 1,259,713,982.55 = 768,383,651.30 : x
  2. Step 2: Convert to fraction form
    839,809,321.70/1,259,713,982.55 = 768,383,651.30/x
  3. Step 3: Cross multiply
    839,809,321.70x = 1,259,713,982.55 × 768,383,651.30
  4. Step 4: Simplify right side
    839,809,321.70x = 967,943,629,505,433,344
  5. Step 5: Solve for x
    x = 967,943,629,505,433,344/839,809,321.70
  6. Step 6: Final answer
    x = 1,152,575,476.95

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Double scale
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Similar ratio
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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.