Home / 855,858.24-1,283,912.55-256,866.78

Finding the Fourth Proportional to 855,858.24, 1,283,912.55 and 256,866.78

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Solution

The fourth proportional to 855,858.24, 1,283,912.55 and 256,866.78 is: 385,337.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,858.24 : 1,283,912.55 = 256,866.78 : x
  2. Step 2: Convert to fraction form
    855,858.24/1,283,912.55 = 256,866.78/x
  3. Step 3: Cross multiply
    855,858.24x = 1,283,912.55 × 256,866.78
  4. Step 4: Simplify right side
    855,858.24x = 329,794,482,520.09
  5. Step 5: Solve for x
    x = 329,794,482,520.09/855,858.24
  6. Step 6: Final answer
    x = 385,337.74

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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.