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Finding the Fourth Proportional to 617,949.70, 852,777.41 and 342,311.78

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Solution

The fourth proportional to 617,949.70, 852,777.41 and 342,311.78 is: 472,394.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,949.70 : 852,777.41 = 342,311.78 : x
  2. Step 2: Convert to fraction form
    617,949.70/852,777.41 = 342,311.78/x
  3. Step 3: Cross multiply
    617,949.70x = 852,777.41 × 342,311.78
  4. Step 4: Simplify right side
    617,949.70x = 291,915,750,173.17
  5. Step 5: Solve for x
    x = 291,915,750,173.17/617,949.70
  6. Step 6: Final answer
    x = 472,394.03

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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.