Home / 693,791.40-1,040,168.70-378,604.20

Finding the Fourth Proportional to 693,791.40, 1,040,168.70 and 378,604.20

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Solution

The fourth proportional to 693,791.40, 1,040,168.70 and 378,604.20 is: 567,623.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,791.40 : 1,040,168.70 = 378,604.20 : x
  2. Step 2: Convert to fraction form
    693,791.40/1,040,168.70 = 378,604.20/x
  3. Step 3: Cross multiply
    693,791.40x = 1,040,168.70 × 378,604.20
  4. Step 4: Simplify right side
    693,791.40x = 393,812,238,528.54
  5. Step 5: Solve for x
    x = 393,812,238,528.54/693,791.40
  6. Step 6: Final answer
    x = 567,623.41

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Double scale
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1.5x scale

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.