Home / 1,121,615.91-1,682,427.51-280,167.66

Finding the Fourth Proportional to 1,121,615.91, 1,682,427.51 and 280,167.66

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Solution

The fourth proportional to 1,121,615.91, 1,682,427.51 and 280,167.66 is: 420,252.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,615.91 : 1,682,427.51 = 280,167.66 : x
  2. Step 2: Convert to fraction form
    1,121,615.91/1,682,427.51 = 280,167.66/x
  3. Step 3: Cross multiply
    1,121,615.91x = 1,682,427.51 × 280,167.66
  4. Step 4: Simplify right side
    1,121,615.91x = 471,361,778,596.33
  5. Step 5: Solve for x
    x = 471,361,778,596.33/1,121,615.91
  6. Step 6: Final answer
    x = 420,252.40

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Double scale
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Similar ratio
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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.