Home / 780,115.90-1,170,087.45-219,207.10

Finding the Fourth Proportional to 780,115.90, 1,170,087.45 and 219,207.10

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Solution

The fourth proportional to 780,115.90, 1,170,087.45 and 219,207.10 is: 328,786.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,115.90 : 1,170,087.45 = 219,207.10 : x
  2. Step 2: Convert to fraction form
    780,115.90/1,170,087.45 = 219,207.10/x
  3. Step 3: Cross multiply
    780,115.90x = 1,170,087.45 × 219,207.10
  4. Step 4: Simplify right side
    780,115.90x = 256,491,476,660.90
  5. Step 5: Solve for x
    x = 256,491,476,660.90/780,115.90
  6. Step 6: Final answer
    x = 328,786.37

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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.