Home / 780,676.70-1,171,015.45-219,711.20

Finding the Fourth Proportional to 780,676.70, 1,171,015.45 and 219,711.20

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Solution

The fourth proportional to 780,676.70, 1,171,015.45 and 219,711.20 is: 329,566.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,676.70 : 1,171,015.45 = 219,711.20 : x
  2. Step 2: Convert to fraction form
    780,676.70/1,171,015.45 = 219,711.20/x
  3. Step 3: Cross multiply
    780,676.70x = 1,171,015.45 × 219,711.20
  4. Step 4: Simplify right side
    780,676.70x = 257,285,203,333.69
  5. Step 5: Solve for x
    x = 257,285,203,333.69/780,676.70
  6. Step 6: Final answer
    x = 329,566.91

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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.