Home / 499,944.94-689,921.07-285,080.39

Finding the Fourth Proportional to 499,944.94, 689,921.07 and 285,080.39

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Solution

The fourth proportional to 499,944.94, 689,921.07 and 285,080.39 is: 393,409.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,944.94 : 689,921.07 = 285,080.39 : x
  2. Step 2: Convert to fraction form
    499,944.94/689,921.07 = 285,080.39/x
  3. Step 3: Cross multiply
    499,944.94x = 689,921.07 × 285,080.39
  4. Step 4: Simplify right side
    499,944.94x = 196,682,970,455.96
  5. Step 5: Solve for x
    x = 196,682,970,455.96/499,944.94
  6. Step 6: Final answer
    x = 393,409.26

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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.