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Finding the Fourth Proportional to 639,339.35, 882,283.95 and 352,859.42

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Solution

The fourth proportional to 639,339.35, 882,283.95 and 352,859.42 is: 486,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,339.35 : 882,283.95 = 352,859.42 : x
  2. Step 2: Convert to fraction form
    639,339.35/882,283.95 = 352,859.42/x
  3. Step 3: Cross multiply
    639,339.35x = 882,283.95 × 352,859.42
  4. Step 4: Simplify right side
    639,339.35x = 311,322,205,078.02
  5. Step 5: Solve for x
    x = 311,322,205,078.02/639,339.35
  6. Step 6: Final answer
    x = 486,943.60

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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.