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Finding the Fourth Proportional to 667,924.24, 921,198 and 587,179.12

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Solution

The fourth proportional to 667,924.24, 921,198 and 587,179.12 is: 809,834.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,924.24 : 921,198 = 587,179.12 : x
  2. Step 2: Convert to fraction form
    667,924.24/921,198 = 587,179.12/x
  3. Step 3: Cross multiply
    667,924.24x = 921,198 × 587,179.12
  4. Step 4: Simplify right side
    667,924.24x = 540,908,230,985.76
  5. Step 5: Solve for x
    x = 540,908,230,985.76/667,924.24
  6. Step 6: Final answer
    x = 809,834.71

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1.5x scale

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.