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Finding the Fourth Proportional to 499,993.56, 689,991.48 and 273,639.60

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Solution

The fourth proportional to 499,993.56, 689,991.48 and 273,639.60 is: 377,622.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,993.56 : 689,991.48 = 273,639.60 : x
  2. Step 2: Convert to fraction form
    499,993.56/689,991.48 = 273,639.60/x
  3. Step 3: Cross multiply
    499,993.56x = 689,991.48 × 273,639.60
  4. Step 4: Simplify right side
    499,993.56x = 188,808,992,590.61
  5. Step 5: Solve for x
    x = 188,808,992,590.61/499,993.56
  6. Step 6: Final answer
    x = 377,622.85

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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.