Home / 643,923.86-965,885.85-223,199.73

Finding the Fourth Proportional to 643,923.86, 965,885.85 and 223,199.73

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Solution

The fourth proportional to 643,923.86, 965,885.85 and 223,199.73 is: 334,799.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,923.86 : 965,885.85 = 223,199.73 : x
  2. Step 2: Convert to fraction form
    643,923.86/965,885.85 = 223,199.73/x
  3. Step 3: Cross multiply
    643,923.86x = 965,885.85 × 223,199.73
  4. Step 4: Simplify right side
    643,923.86x = 215,585,460,930.82
  5. Step 5: Solve for x
    x = 215,585,460,930.82/643,923.86
  6. Step 6: Final answer
    x = 334,799.62

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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.