Home / 627,003.78-865,318.58-355,120.04

Finding the Fourth Proportional to 627,003.78, 865,318.58 and 355,120.04

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Solution

The fourth proportional to 627,003.78, 865,318.58 and 355,120.04 is: 490,095.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,003.78 : 865,318.58 = 355,120.04 : x
  2. Step 2: Convert to fraction form
    627,003.78/865,318.58 = 355,120.04/x
  3. Step 3: Cross multiply
    627,003.78x = 865,318.58 × 355,120.04
  4. Step 4: Simplify right side
    627,003.78x = 307,291,970,602.39
  5. Step 5: Solve for x
    x = 307,291,970,602.39/627,003.78
  6. Step 6: Final answer
    x = 490,095.88

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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.