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Finding the Fourth Proportional to 839,858.78, 1,259,529.78 and 240,659.30

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Solution

The fourth proportional to 839,858.78, 1,259,529.78 and 240,659.30 is: 360,914.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,858.78 : 1,259,529.78 = 240,659.30 : x
  2. Step 2: Convert to fraction form
    839,858.78/1,259,529.78 = 240,659.30/x
  3. Step 3: Cross multiply
    839,858.78x = 1,259,529.78 × 240,659.30
  4. Step 4: Simplify right side
    839,858.78x = 303,117,555,183.95
  5. Step 5: Solve for x
    x = 303,117,555,183.95/839,858.78
  6. Step 6: Final answer
    x = 360,914.91

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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.