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Finding the Fourth Proportional to 639,164.73, 882,046.35 and 352,684.74

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Solution

The fourth proportional to 639,164.73, 882,046.35 and 352,684.74 is: 486,704.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,164.73 : 882,046.35 = 352,684.74 : x
  2. Step 2: Convert to fraction form
    639,164.73/882,046.35 = 352,684.74/x
  3. Step 3: Cross multiply
    639,164.73x = 882,046.35 × 352,684.74
  4. Step 4: Simplify right side
    639,164.73x = 311,084,287,617.70
  5. Step 5: Solve for x
    x = 311,084,287,617.70/639,164.73
  6. Step 6: Final answer
    x = 486,704.40

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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.