Home / 780,909.11-1,171,458.45-219,943.61

Finding the Fourth Proportional to 780,909.11, 1,171,458.45 and 219,943.61

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Solution

The fourth proportional to 780,909.11, 1,171,458.45 and 219,943.61 is: 329,942.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,909.11 : 1,171,458.45 = 219,943.61 : x
  2. Step 2: Convert to fraction form
    780,909.11/1,171,458.45 = 219,943.61/x
  3. Step 3: Cross multiply
    780,909.11x = 1,171,458.45 × 219,943.61
  4. Step 4: Simplify right side
    780,909.11x = 257,654,794,771.08
  5. Step 5: Solve for x
    x = 257,654,794,771.08/780,909.11
  6. Step 6: Final answer
    x = 329,942.11

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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.