Home / 485,520.15-670,057.71-267,771.42

Finding the Fourth Proportional to 485,520.15, 670,057.71 and 267,771.42

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Solution

The fourth proportional to 485,520.15, 670,057.71 and 267,771.42 is: 369,546.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,520.15 : 670,057.71 = 267,771.42 : x
  2. Step 2: Convert to fraction form
    485,520.15/670,057.71 = 267,771.42/x
  3. Step 3: Cross multiply
    485,520.15x = 670,057.71 × 267,771.42
  4. Step 4: Simplify right side
    485,520.15x = 179,422,306,498.70
  5. Step 5: Solve for x
    x = 179,422,306,498.70/485,520.15
  6. Step 6: Final answer
    x = 369,546.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.