Home / 1,213,205.16-1,818,331.90-858,321.48

Finding the Fourth Proportional to 1,213,205.16, 1,818,331.90 and 858,321.48

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Solution

The fourth proportional to 1,213,205.16, 1,818,331.90 and 858,321.48 is: 1,286,438.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,205.16 : 1,818,331.90 = 858,321.48 : x
  2. Step 2: Convert to fraction form
    1,213,205.16/1,818,331.90 = 858,321.48/x
  3. Step 3: Cross multiply
    1,213,205.16x = 1,818,331.90 × 858,321.48
  4. Step 4: Simplify right side
    1,213,205.16x = 1,560,713,327,539.21
  5. Step 5: Solve for x
    x = 1,560,713,327,539.21/1,213,205.16
  6. Step 6: Final answer
    x = 1,286,438.09

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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.