Home / 811,711.62-1,120,163.34-449,150.76

Finding the Fourth Proportional to 811,711.62, 1,120,163.34 and 449,150.76

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Solution

The fourth proportional to 811,711.62, 1,120,163.34 and 449,150.76 is: 619,828.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,711.62 : 1,120,163.34 = 449,150.76 : x
  2. Step 2: Convert to fraction form
    811,711.62/1,120,163.34 = 449,150.76/x
  3. Step 3: Cross multiply
    811,711.62x = 1,120,163.34 × 449,150.76
  4. Step 4: Simplify right side
    811,711.62x = 503,122,215,485.14
  5. Step 5: Solve for x
    x = 503,122,215,485.14/811,711.62
  6. Step 6: Final answer
    x = 619,828.77

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.