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Finding the Fourth Proportional to 627,179.94, 940,628.16 and 290,035.98

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Solution

The fourth proportional to 627,179.94, 940,628.16 and 290,035.98 is: 434,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,179.94 : 940,628.16 = 290,035.98 : x
  2. Step 2: Convert to fraction form
    627,179.94/940,628.16 = 290,035.98/x
  3. Step 3: Cross multiply
    627,179.94x = 940,628.16 × 290,035.98
  4. Step 4: Simplify right side
    627,179.94x = 272,816,010,201.20
  5. Step 5: Solve for x
    x = 272,816,010,201.20/627,179.94
  6. Step 6: Final answer
    x = 434,988.42

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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.