Home / 785,385.20-1,177,732.20-311,913.20

Finding the Fourth Proportional to 785,385.20, 1,177,732.20 and 311,913.20

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Solution

The fourth proportional to 785,385.20, 1,177,732.20 and 311,913.20 is: 467,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,385.20 : 1,177,732.20 = 311,913.20 : x
  2. Step 2: Convert to fraction form
    785,385.20/1,177,732.20 = 311,913.20/x
  3. Step 3: Cross multiply
    785,385.20x = 1,177,732.20 × 311,913.20
  4. Step 4: Simplify right side
    785,385.20x = 367,350,219,245.04
  5. Step 5: Solve for x
    x = 367,350,219,245.04/785,385.20
  6. Step 6: Final answer
    x = 467,732.55

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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.