Home / 693,090.40-1,040,704.80-378,162.40

Finding the Fourth Proportional to 693,090.40, 1,040,704.80 and 378,162.40

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Solution

The fourth proportional to 693,090.40, 1,040,704.80 and 378,162.40 is: 567,826.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,090.40 : 1,040,704.80 = 378,162.40 : x
  2. Step 2: Convert to fraction form
    693,090.40/1,040,704.80 = 378,162.40/x
  3. Step 3: Cross multiply
    693,090.40x = 1,040,704.80 × 378,162.40
  4. Step 4: Simplify right side
    693,090.40x = 393,555,424,859.52
  5. Step 5: Solve for x
    x = 393,555,424,859.52/693,090.40
  6. Step 6: Final answer
    x = 567,826.97

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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.