Home / 758,645.82-1,138,138.20-285,335.28

Finding the Fourth Proportional to 758,645.82, 1,138,138.20 and 285,335.28

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Solution

The fourth proportional to 758,645.82, 1,138,138.20 and 285,335.28 is: 428,066.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,645.82 : 1,138,138.20 = 285,335.28 : x
  2. Step 2: Convert to fraction form
    758,645.82/1,138,138.20 = 285,335.28/x
  3. Step 3: Cross multiply
    758,645.82x = 1,138,138.20 × 285,335.28
  4. Step 4: Simplify right side
    758,645.82x = 324,750,981,975.70
  5. Step 5: Solve for x
    x = 324,750,981,975.70/758,645.82
  6. Step 6: Final answer
    x = 428,066.66

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Double scale
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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.