Home / 1,213,204.91-1,818,331.55-858,321.23

Finding the Fourth Proportional to 1,213,204.91, 1,818,331.55 and 858,321.23

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Solution

The fourth proportional to 1,213,204.91, 1,818,331.55 and 858,321.23 is: 1,286,437.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,204.91 : 1,818,331.55 = 858,321.23 : x
  2. Step 2: Convert to fraction form
    1,213,204.91/1,818,331.55 = 858,321.23/x
  3. Step 3: Cross multiply
    1,213,204.91x = 1,818,331.55 × 858,321.23
  4. Step 4: Simplify right side
    1,213,204.91x = 1,560,712,568,252.20
  5. Step 5: Solve for x
    x = 1,560,712,568,252.20/1,213,204.91
  6. Step 6: Final answer
    x = 1,286,437.73

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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.