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Finding the Fourth Proportional to 447,830.79, 617,978.46 and 246,626.79

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Solution

The fourth proportional to 447,830.79, 617,978.46 and 246,626.79 is: 340,329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,830.79 : 617,978.46 = 246,626.79 : x
  2. Step 2: Convert to fraction form
    447,830.79/617,978.46 = 246,626.79/x
  3. Step 3: Cross multiply
    447,830.79x = 617,978.46 × 246,626.79
  4. Step 4: Simplify right side
    447,830.79x = 152,410,043,878.94
  5. Step 5: Solve for x
    x = 152,410,043,878.94/447,830.79
  6. Step 6: Final answer
    x = 340,329.53

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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.