Home / 819,104.28-1,228,573.32-219,987.60

Finding the Fourth Proportional to 819,104.28, 1,228,573.32 and 219,987.60

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Solution

The fourth proportional to 819,104.28, 1,228,573.32 and 219,987.60 is: 329,959.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,104.28 : 1,228,573.32 = 219,987.60 : x
  2. Step 2: Convert to fraction form
    819,104.28/1,228,573.32 = 219,987.60/x
  3. Step 3: Cross multiply
    819,104.28x = 1,228,573.32 × 219,987.60
  4. Step 4: Simplify right side
    819,104.28x = 270,270,896,090.83
  5. Step 5: Solve for x
    x = 270,270,896,090.83/819,104.28
  6. Step 6: Final answer
    x = 329,959.08

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1.5x scale

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.