Home / 843,340.28-1,265,509.38-311,231.84

Finding the Fourth Proportional to 843,340.28, 1,265,509.38 and 311,231.84

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Solution

The fourth proportional to 843,340.28, 1,265,509.38 and 311,231.84 is: 467,031.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,340.28 : 1,265,509.38 = 311,231.84 : x
  2. Step 2: Convert to fraction form
    843,340.28/1,265,509.38 = 311,231.84/x
  3. Step 3: Cross multiply
    843,340.28x = 1,265,509.38 × 311,231.84
  4. Step 4: Simplify right side
    843,340.28x = 393,866,812,874.66
  5. Step 5: Solve for x
    x = 393,866,812,874.66/843,340.28
  6. Step 6: Final answer
    x = 467,031.90

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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.