Home / 855,857.24-1,283,911.05-256,865.78

Finding the Fourth Proportional to 855,857.24, 1,283,911.05 and 256,865.78

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Solution

The fourth proportional to 855,857.24, 1,283,911.05 and 256,865.78 is: 385,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,857.24 : 1,283,911.05 = 256,865.78 : x
  2. Step 2: Convert to fraction form
    855,857.24/1,283,911.05 = 256,865.78/x
  3. Step 3: Cross multiply
    855,857.24x = 1,283,911.05 × 256,865.78
  4. Step 4: Simplify right side
    855,857.24x = 329,792,817,481.89
  5. Step 5: Solve for x
    x = 329,792,817,481.89/855,857.24
  6. Step 6: Final answer
    x = 385,336.25

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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.