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Finding the Fourth Proportional to 839,855.80, 1,259,782.08 and 208,770.22

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Solution

The fourth proportional to 839,855.80, 1,259,782.08 and 208,770.22 is: 313,154.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,855.80 : 1,259,782.08 = 208,770.22 : x
  2. Step 2: Convert to fraction form
    839,855.80/1,259,782.08 = 208,770.22/x
  3. Step 3: Cross multiply
    839,855.80x = 1,259,782.08 × 208,770.22
  4. Step 4: Simplify right side
    839,855.80x = 263,004,981,993.66
  5. Step 5: Solve for x
    x = 263,004,981,993.66/839,855.80
  6. Step 6: Final answer
    x = 313,154.93

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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.