Home / 693,480.20-1,040,220.30-426,374.60

Finding the Fourth Proportional to 693,480.20, 1,040,220.30 and 426,374.60

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Solution

The fourth proportional to 693,480.20, 1,040,220.30 and 426,374.60 is: 639,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,480.20 : 1,040,220.30 = 426,374.60 : x
  2. Step 2: Convert to fraction form
    693,480.20/1,040,220.30 = 426,374.60/x
  3. Step 3: Cross multiply
    693,480.20x = 1,040,220.30 × 426,374.60
  4. Step 4: Simplify right side
    693,480.20x = 443,523,514,324.38
  5. Step 5: Solve for x
    x = 443,523,514,324.38/693,480.20
  6. Step 6: Final answer
    x = 639,561.90

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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.