Home / 811,711.76-1,120,066.24-449,087.72

Finding the Fourth Proportional to 811,711.76, 1,120,066.24 and 449,087.72

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Solution

The fourth proportional to 811,711.76, 1,120,066.24 and 449,087.72 is: 619,687.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,711.76 : 1,120,066.24 = 449,087.72 : x
  2. Step 2: Convert to fraction form
    811,711.76/1,120,066.24 = 449,087.72/x
  3. Step 3: Cross multiply
    811,711.76x = 1,120,066.24 × 449,087.72
  4. Step 4: Simplify right side
    811,711.76x = 503,007,993,970.57
  5. Step 5: Solve for x
    x = 503,007,993,970.57/811,711.76
  6. Step 6: Final answer
    x = 619,687.95

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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.