Home / 785,384.20-1,177,730.70-311,912.20

Finding the Fourth Proportional to 785,384.20, 1,177,730.70 and 311,912.20

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Solution

The fourth proportional to 785,384.20, 1,177,730.70 and 311,912.20 is: 467,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,384.20 : 1,177,730.70 = 311,912.20 : x
  2. Step 2: Convert to fraction form
    785,384.20/1,177,730.70 = 311,912.20/x
  3. Step 3: Cross multiply
    785,384.20x = 1,177,730.70 × 311,912.20
  4. Step 4: Simplify right side
    785,384.20x = 367,348,573,644.54
  5. Step 5: Solve for x
    x = 367,348,573,644.54/785,384.20
  6. Step 6: Final answer
    x = 467,731.05

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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.