Home / 643,937.23-965,905.85-223,213.11

Finding the Fourth Proportional to 643,937.23, 965,905.85 and 223,213.11

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Solution

The fourth proportional to 643,937.23, 965,905.85 and 223,213.11 is: 334,819.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,937.23 : 965,905.85 = 223,213.11 : x
  2. Step 2: Convert to fraction form
    643,937.23/965,905.85 = 223,213.11/x
  3. Step 3: Cross multiply
    643,937.23x = 965,905.85 × 223,213.11
  4. Step 4: Simplify right side
    643,937.23x = 215,602,848,745.69
  5. Step 5: Solve for x
    x = 215,602,848,745.69/643,937.23
  6. Step 6: Final answer
    x = 334,819.67

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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.