Home / 839,821,327.70-1,259,731,991.55-664,469,417.30

Finding the Fourth Proportional to 839,821,327.70, 1,259,731,991.55 and 664,469,417.30

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Solution

The fourth proportional to 839,821,327.70, 1,259,731,991.55 and 664,469,417.30 is: 996,704,125.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,821,327.70 : 1,259,731,991.55 = 664,469,417.30 : x
  2. Step 2: Convert to fraction form
    839,821,327.70/1,259,731,991.55 = 664,469,417.30/x
  3. Step 3: Cross multiply
    839,821,327.70x = 1,259,731,991.55 × 664,469,417.30
  4. Step 4: Simplify right side
    839,821,327.70x = 837,053,382,379,396,992
  5. Step 5: Solve for x
    x = 837,053,382,379,396,992/839,821,327.70
  6. Step 6: Final answer
    x = 996,704,125.95

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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.