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Finding the Fourth Proportional to 627,273.66, 865,446.94 and 355,298.34

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Solution

The fourth proportional to 627,273.66, 865,446.94 and 355,298.34 is: 490,203.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,273.66 : 865,446.94 = 355,298.34 : x
  2. Step 2: Convert to fraction form
    627,273.66/865,446.94 = 355,298.34/x
  3. Step 3: Cross multiply
    627,273.66x = 865,446.94 × 355,298.34
  4. Step 4: Simplify right side
    627,273.66x = 307,491,861,140.08
  5. Step 5: Solve for x
    x = 307,491,861,140.08/627,273.66
  6. Step 6: Final answer
    x = 490,203.69

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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.