Home / 639,217.20-882,081.72-352,764.24

Finding the Fourth Proportional to 639,217.20, 882,081.72 and 352,764.24

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Solution

The fourth proportional to 639,217.20, 882,081.72 and 352,764.24 is: 486,793.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,217.20 : 882,081.72 = 352,764.24 : x
  2. Step 2: Convert to fraction form
    639,217.20/882,081.72 = 352,764.24/x
  3. Step 3: Cross multiply
    639,217.20x = 882,081.72 × 352,764.24
  4. Step 4: Simplify right side
    639,217.20x = 311,166,887,573.69
  5. Step 5: Solve for x
    x = 311,166,887,573.69/639,217.20
  6. Step 6: Final answer
    x = 486,793.67

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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.