Home / 784,942.80-1,177,414.20-311,384.40

Finding the Fourth Proportional to 784,942.80, 1,177,414.20 and 311,384.40

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Solution

The fourth proportional to 784,942.80, 1,177,414.20 and 311,384.40 is: 467,076.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,942.80 : 1,177,414.20 = 311,384.40 : x
  2. Step 2: Convert to fraction form
    784,942.80/1,177,414.20 = 311,384.40/x
  3. Step 3: Cross multiply
    784,942.80x = 1,177,414.20 × 311,384.40
  4. Step 4: Simplify right side
    784,942.80x = 366,628,414,218.48
  5. Step 5: Solve for x
    x = 366,628,414,218.48/784,942.80
  6. Step 6: Final answer
    x = 467,076.60

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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.