Home / 639,422.20-882,397.83-352,942.21

Finding the Fourth Proportional to 639,422.20, 882,397.83 and 352,942.21

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Solution

The fourth proportional to 639,422.20, 882,397.83 and 352,942.21 is: 487,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,422.20 : 882,397.83 = 352,942.21 : x
  2. Step 2: Convert to fraction form
    639,422.20/882,397.83 = 352,942.21/x
  3. Step 3: Cross multiply
    639,422.20x = 882,397.83 × 352,942.21
  4. Step 4: Simplify right side
    639,422.20x = 311,435,440,219.40
  5. Step 5: Solve for x
    x = 311,435,440,219.40/639,422.20
  6. Step 6: Final answer
    x = 487,057.60

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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.