Home / 639,341.72-882,287.22-352,861.80

Finding the Fourth Proportional to 639,341.72, 882,287.22 and 352,861.80

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Solution

The fourth proportional to 639,341.72, 882,287.22 and 352,861.80 is: 486,946.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,341.72 : 882,287.22 = 352,861.80 : x
  2. Step 2: Convert to fraction form
    639,341.72/882,287.22 = 352,861.80/x
  3. Step 3: Cross multiply
    639,341.72x = 882,287.22 × 352,861.80
  4. Step 4: Simplify right side
    639,341.72x = 311,325,456,566.20
  5. Step 5: Solve for x
    x = 311,325,456,566.20/639,341.72
  6. Step 6: Final answer
    x = 486,946.88

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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.