Home / 855,863.60-1,283,794.19-256,823.78

Finding the Fourth Proportional to 855,863.60, 1,283,794.19 and 256,823.78

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Solution

The fourth proportional to 855,863.60, 1,283,794.19 and 256,823.78 is: 385,235.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,863.60 : 1,283,794.19 = 256,823.78 : x
  2. Step 2: Convert to fraction form
    855,863.60/1,283,794.19 = 256,823.78/x
  3. Step 3: Cross multiply
    855,863.60x = 1,283,794.19 × 256,823.78
  4. Step 4: Simplify right side
    855,863.60x = 329,708,875,333.72
  5. Step 5: Solve for x
    x = 329,708,875,333.72/855,863.60
  6. Step 6: Final answer
    x = 385,235.31

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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.