Home / 684,189.78-944,141.22-378,247.83

Finding the Fourth Proportional to 684,189.78, 944,141.22 and 378,247.83

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Solution

The fourth proportional to 684,189.78, 944,141.22 and 378,247.83 is: 521,959.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,189.78 : 944,141.22 = 378,247.83 : x
  2. Step 2: Convert to fraction form
    684,189.78/944,141.22 = 378,247.83/x
  3. Step 3: Cross multiply
    684,189.78x = 944,141.22 × 378,247.83
  4. Step 4: Simplify right side
    684,189.78x = 357,119,367,678.55
  5. Step 5: Solve for x
    x = 357,119,367,678.55/684,189.78
  6. Step 6: Final answer
    x = 521,959.52

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.