Home / 1,055,123.78-1,582,685.52-256,399.78

Finding the Fourth Proportional to 1,055,123.78, 1,582,685.52 and 256,399.78

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Solution

The fourth proportional to 1,055,123.78, 1,582,685.52 and 256,399.78 is: 384,599.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055,123.78 : 1,582,685.52 = 256,399.78 : x
  2. Step 2: Convert to fraction form
    1,055,123.78/1,582,685.52 = 256,399.78/x
  3. Step 3: Cross multiply
    1,055,123.78x = 1,582,685.52 × 256,399.78
  4. Step 4: Simplify right side
    1,055,123.78x = 405,800,219,137.19
  5. Step 5: Solve for x
    x = 405,800,219,137.19/1,055,123.78
  6. Step 6: Final answer
    x = 384,599.63

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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.