Home / 644,780.20-967,170.30-325,915.60

Finding the Fourth Proportional to 644,780.20, 967,170.30 and 325,915.60

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Solution

The fourth proportional to 644,780.20, 967,170.30 and 325,915.60 is: 488,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,780.20 : 967,170.30 = 325,915.60 : x
  2. Step 2: Convert to fraction form
    644,780.20/967,170.30 = 325,915.60/x
  3. Step 3: Cross multiply
    644,780.20x = 967,170.30 × 325,915.60
  4. Step 4: Simplify right side
    644,780.20x = 315,215,888,626.68
  5. Step 5: Solve for x
    x = 315,215,888,626.68/644,780.20
  6. Step 6: Final answer
    x = 488,873.40

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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.