Home / 458,634.15-687,671.78-205,865.55

Finding the Fourth Proportional to 458,634.15, 687,671.78 and 205,865.55

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Solution

The fourth proportional to 458,634.15, 687,671.78 and 205,865.55 is: 308,672.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,634.15 : 687,671.78 = 205,865.55 : x
  2. Step 2: Convert to fraction form
    458,634.15/687,671.78 = 205,865.55/x
  3. Step 3: Cross multiply
    458,634.15x = 687,671.78 × 205,865.55
  4. Step 4: Simplify right side
    458,634.15x = 141,567,928,179.85
  5. Step 5: Solve for x
    x = 141,567,928,179.85/458,634.15
  6. Step 6: Final answer
    x = 308,672.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.