Home / 819,109.74-1,229,218.23-286,635.48

Finding the Fourth Proportional to 819,109.74, 1,229,218.23 and 286,635.48

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Solution

The fourth proportional to 819,109.74, 1,229,218.23 and 286,635.48 is: 430,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,109.74 : 1,229,218.23 = 286,635.48 : x
  2. Step 2: Convert to fraction form
    819,109.74/1,229,218.23 = 286,635.48/x
  3. Step 3: Cross multiply
    819,109.74x = 1,229,218.23 × 286,635.48
  4. Step 4: Simplify right side
    819,109.74x = 352,337,557,380.80
  5. Step 5: Solve for x
    x = 352,337,557,380.80/819,109.74
  6. Step 6: Final answer
    x = 430,146.95

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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.