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Finding the Fourth Proportional to 668,296.80, 922,164.62 and 381,835.44

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Solution

The fourth proportional to 668,296.80, 922,164.62 and 381,835.44 is: 526,884.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,296.80 : 922,164.62 = 381,835.44 : x
  2. Step 2: Convert to fraction form
    668,296.80/922,164.62 = 381,835.44/x
  3. Step 3: Cross multiply
    668,296.80x = 922,164.62 × 381,835.44
  4. Step 4: Simplify right side
    668,296.80x = 352,115,131,520.96
  5. Step 5: Solve for x
    x = 352,115,131,520.96/668,296.80
  6. Step 6: Final answer
    x = 526,884.36

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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.