Home / 839,923.20-1,259,884.80-485,629.20

Finding the Fourth Proportional to 839,923.20, 1,259,884.80 and 485,629.20

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Solution

The fourth proportional to 839,923.20, 1,259,884.80 and 485,629.20 is: 728,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,923.20 : 1,259,884.80 = 485,629.20 : x
  2. Step 2: Convert to fraction form
    839,923.20/1,259,884.80 = 485,629.20/x
  3. Step 3: Cross multiply
    839,923.20x = 1,259,884.80 × 485,629.20
  4. Step 4: Simplify right side
    839,923.20x = 611,836,847,516.16
  5. Step 5: Solve for x
    x = 611,836,847,516.16/839,923.20
  6. Step 6: Final answer
    x = 728,443.80

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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.