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Finding the Fourth Proportional to 639,339.59, 882,284.29 and 352,859.68

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Solution

The fourth proportional to 639,339.59, 882,284.29 and 352,859.68 is: 486,943.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,339.59 : 882,284.29 = 352,859.68 : x
  2. Step 2: Convert to fraction form
    639,339.59/882,284.29 = 352,859.68/x
  3. Step 3: Cross multiply
    639,339.59x = 882,284.29 × 352,859.68
  4. Step 4: Simplify right side
    639,339.59x = 311,322,552,238.43
  5. Step 5: Solve for x
    x = 311,322,552,238.43/639,339.59
  6. Step 6: Final answer
    x = 486,943.96

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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.