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Finding the Fourth Proportional to 641,751.20, 962,626.80 and 326,823.20

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Solution

The fourth proportional to 641,751.20, 962,626.80 and 326,823.20 is: 490,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,751.20 : 962,626.80 = 326,823.20 : x
  2. Step 2: Convert to fraction form
    641,751.20/962,626.80 = 326,823.20/x
  3. Step 3: Cross multiply
    641,751.20x = 962,626.80 × 326,823.20
  4. Step 4: Simplify right side
    641,751.20x = 314,608,771,181.76
  5. Step 5: Solve for x
    x = 314,608,771,181.76/641,751.20
  6. Step 6: Final answer
    x = 490,234.80

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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.