Home / 639,383.43-882,286.27-352,885.05

Finding the Fourth Proportional to 639,383.43, 882,286.27 and 352,885.05

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Solution

The fourth proportional to 639,383.43, 882,286.27 and 352,885.05 is: 486,946.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,383.43 : 882,286.27 = 352,885.05 : x
  2. Step 2: Convert to fraction form
    639,383.43/882,286.27 = 352,885.05/x
  3. Step 3: Cross multiply
    639,383.43x = 882,286.27 × 352,885.05
  4. Step 4: Simplify right side
    639,383.43x = 311,345,630,091.83
  5. Step 5: Solve for x
    x = 311,345,630,091.83/639,383.43
  6. Step 6: Final answer
    x = 486,946.67

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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.