Home / 725,613.88-1,088,789.46-326,174.20

Finding the Fourth Proportional to 725,613.88, 1,088,789.46 and 326,174.20

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Solution

The fourth proportional to 725,613.88, 1,088,789.46 and 326,174.20 is: 489,427.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,613.88 : 1,088,789.46 = 326,174.20 : x
  2. Step 2: Convert to fraction form
    725,613.88/1,088,789.46 = 326,174.20/x
  3. Step 3: Cross multiply
    725,613.88x = 1,088,789.46 × 326,174.20
  4. Step 4: Simplify right side
    725,613.88x = 355,135,031,083.93
  5. Step 5: Solve for x
    x = 355,135,031,083.93/725,613.88
  6. Step 6: Final answer
    x = 489,427.01

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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.