Home / 619,815.42-930,221.28-320,383.71

Finding the Fourth Proportional to 619,815.42, 930,221.28 and 320,383.71

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Solution

The fourth proportional to 619,815.42, 930,221.28 and 320,383.71 is: 480,833.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,815.42 : 930,221.28 = 320,383.71 : x
  2. Step 2: Convert to fraction form
    619,815.42/930,221.28 = 320,383.71/x
  3. Step 3: Cross multiply
    619,815.42x = 930,221.28 × 320,383.71
  4. Step 4: Simplify right side
    619,815.42x = 298,027,744,807.35
  5. Step 5: Solve for x
    x = 298,027,744,807.35/619,815.42
  6. Step 6: Final answer
    x = 480,833.06

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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.