Home / 839,443.20-1,259,164.80-278,477.70

Finding the Fourth Proportional to 839,443.20, 1,259,164.80 and 278,477.70

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Solution

The fourth proportional to 839,443.20, 1,259,164.80 and 278,477.70 is: 417,716.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,443.20 : 1,259,164.80 = 278,477.70 : x
  2. Step 2: Convert to fraction form
    839,443.20/1,259,164.80 = 278,477.70/x
  3. Step 3: Cross multiply
    839,443.20x = 1,259,164.80 × 278,477.70
  4. Step 4: Simplify right side
    839,443.20x = 350,649,317,424.96
  5. Step 5: Solve for x
    x = 350,649,317,424.96/839,443.20
  6. Step 6: Final answer
    x = 417,716.55

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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.