Home / 646,868.20-970,302.30-203,578.60

Finding the Fourth Proportional to 646,868.20, 970,302.30 and 203,578.60

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Solution

The fourth proportional to 646,868.20, 970,302.30 and 203,578.60 is: 305,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,868.20 : 970,302.30 = 203,578.60 : x
  2. Step 2: Convert to fraction form
    646,868.20/970,302.30 = 203,578.60/x
  3. Step 3: Cross multiply
    646,868.20x = 970,302.30 × 203,578.60
  4. Step 4: Simplify right side
    646,868.20x = 197,532,783,810.78
  5. Step 5: Solve for x
    x = 197,532,783,810.78/646,868.20
  6. Step 6: Final answer
    x = 305,367.90

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Half scale
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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.