Home / 643,183.57-963,489.04-386,874.62

Finding the Fourth Proportional to 643,183.57, 963,489.04 and 386,874.62

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Solution

The fourth proportional to 643,183.57, 963,489.04 and 386,874.62 is: 579,538.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,183.57 : 963,489.04 = 386,874.62 : x
  2. Step 2: Convert to fraction form
    643,183.57/963,489.04 = 386,874.62/x
  3. Step 3: Cross multiply
    643,183.57x = 963,489.04 × 386,874.62
  4. Step 4: Simplify right side
    643,183.57x = 372,749,456,224.17
  5. Step 5: Solve for x
    x = 372,749,456,224.17/643,183.57
  6. Step 6: Final answer
    x = 579,538.21

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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.