Home / 780,239.09-1,170,358.65-219,273.59

Finding the Fourth Proportional to 780,239.09, 1,170,358.65 and 219,273.59

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Solution

The fourth proportional to 780,239.09, 1,170,358.65 and 219,273.59 is: 328,910.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,239.09 : 1,170,358.65 = 219,273.59 : x
  2. Step 2: Convert to fraction form
    780,239.09/1,170,358.65 = 219,273.59/x
  3. Step 3: Cross multiply
    780,239.09x = 1,170,358.65 × 219,273.59
  4. Step 4: Simplify right side
    780,239.09x = 256,628,745,698.95
  5. Step 5: Solve for x
    x = 256,628,745,698.95/780,239.09
  6. Step 6: Final answer
    x = 328,910.39

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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.