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Finding the Fourth Proportional to 639,352.62, 882,313.83 and 352,872.63

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Solution

The fourth proportional to 639,352.62, 882,313.83 and 352,872.63 is: 486,968.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,352.62 : 882,313.83 = 352,872.63 : x
  2. Step 2: Convert to fraction form
    639,352.62/882,313.83 = 352,872.63/x
  3. Step 3: Cross multiply
    639,352.62x = 882,313.83 × 352,872.63
  4. Step 4: Simplify right side
    639,352.62x = 311,344,401,677.47
  5. Step 5: Solve for x
    x = 311,344,401,677.47/639,352.62
  6. Step 6: Final answer
    x = 486,968.21

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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.