Home / 521,715.40-782,284.74-161,786.44

Finding the Fourth Proportional to 521,715.40, 782,284.74 and 161,786.44

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Solution

The fourth proportional to 521,715.40, 782,284.74 and 161,786.44 is: 242,590.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,715.40 : 782,284.74 = 161,786.44 : x
  2. Step 2: Convert to fraction form
    521,715.40/782,284.74 = 161,786.44/x
  3. Step 3: Cross multiply
    521,715.40x = 782,284.74 × 161,786.44
  4. Step 4: Simplify right side
    521,715.40x = 126,563,063,150.93
  5. Step 5: Solve for x
    x = 126,563,063,150.93/521,715.40
  6. Step 6: Final answer
    x = 242,590.24

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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.