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Finding the Fourth Proportional to 617,568.20, 852,082.12 and 355,859.12

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Solution

The fourth proportional to 617,568.20, 852,082.12 and 355,859.12 is: 490,992.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,568.20 : 852,082.12 = 355,859.12 : x
  2. Step 2: Convert to fraction form
    617,568.20/852,082.12 = 355,859.12/x
  3. Step 3: Cross multiply
    617,568.20x = 852,082.12 × 355,859.12
  4. Step 4: Simplify right side
    617,568.20x = 303,221,187,351.23
  5. Step 5: Solve for x
    x = 303,221,187,351.23/617,568.20
  6. Step 6: Final answer
    x = 490,992.23

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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.