Home / 839,720.40-1,259,872.20-366,745.20

Finding the Fourth Proportional to 839,720.40, 1,259,872.20 and 366,745.20

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Solution

The fourth proportional to 839,720.40, 1,259,872.20 and 366,745.20 is: 550,245.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,720.40 : 1,259,872.20 = 366,745.20 : x
  2. Step 2: Convert to fraction form
    839,720.40/1,259,872.20 = 366,745.20/x
  3. Step 3: Cross multiply
    839,720.40x = 1,259,872.20 × 366,745.20
  4. Step 4: Simplify right side
    839,720.40x = 462,052,081,963.44
  5. Step 5: Solve for x
    x = 462,052,081,963.44/839,720.40
  6. Step 6: Final answer
    x = 550,245.16

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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.