Home / 855,998.50-1,283,994.78-256,957.24

Finding the Fourth Proportional to 855,998.50, 1,283,994.78 and 256,957.24

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Solution

The fourth proportional to 855,998.50, 1,283,994.78 and 256,957.24 is: 385,434.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,998.50 : 1,283,994.78 = 256,957.24 : x
  2. Step 2: Convert to fraction form
    855,998.50/1,283,994.78 = 256,957.24/x
  3. Step 3: Cross multiply
    855,998.50x = 1,283,994.78 × 256,957.24
  4. Step 4: Simplify right side
    855,998.50x = 329,931,754,843.21
  5. Step 5: Solve for x
    x = 329,931,754,843.21/855,998.50
  6. Step 6: Final answer
    x = 385,434.97

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Double scale
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Similar ratio
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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.