Home / 693,418.60-1,040,127.90-320,170.60

Finding the Fourth Proportional to 693,418.60, 1,040,127.90 and 320,170.60

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Solution

The fourth proportional to 693,418.60, 1,040,127.90 and 320,170.60 is: 480,255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,418.60 : 1,040,127.90 = 320,170.60 : x
  2. Step 2: Convert to fraction form
    693,418.60/1,040,127.90 = 320,170.60/x
  3. Step 3: Cross multiply
    693,418.60x = 1,040,127.90 × 320,170.60
  4. Step 4: Simplify right side
    693,418.60x = 333,018,373,819.74
  5. Step 5: Solve for x
    x = 333,018,373,819.74/693,418.60
  6. Step 6: Final answer
    x = 480,255.90

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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.