Home / 521,742.74-782,488.22-217,972.80

Finding the Fourth Proportional to 521,742.74, 782,488.22 and 217,972.80

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Solution

The fourth proportional to 521,742.74, 782,488.22 and 217,972.80 is: 326,906.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,742.74 : 782,488.22 = 217,972.80 : x
  2. Step 2: Convert to fraction form
    521,742.74/782,488.22 = 217,972.80/x
  3. Step 3: Cross multiply
    521,742.74x = 782,488.22 × 217,972.80
  4. Step 4: Simplify right side
    521,742.74x = 170,561,145,178.38
  5. Step 5: Solve for x
    x = 170,561,145,178.38/521,742.74
  6. Step 6: Final answer
    x = 326,906.60

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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.