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Finding the Fourth Proportional to 627,591.60, 940,804.20 and 438,051.60

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Solution

The fourth proportional to 627,591.60, 940,804.20 and 438,051.60 is: 656,670.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,591.60 : 940,804.20 = 438,051.60 : x
  2. Step 2: Convert to fraction form
    627,591.60/940,804.20 = 438,051.60/x
  3. Step 3: Cross multiply
    627,591.60x = 940,804.20 × 438,051.60
  4. Step 4: Simplify right side
    627,591.60x = 412,120,785,096.72
  5. Step 5: Solve for x
    x = 412,120,785,096.72/627,591.60
  6. Step 6: Final answer
    x = 656,670.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.