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Finding the Fourth Proportional to 449,497.80, 674,246.70 and 289,830.60

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Solution

The fourth proportional to 449,497.80, 674,246.70 and 289,830.60 is: 434,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,497.80 : 674,246.70 = 289,830.60 : x
  2. Step 2: Convert to fraction form
    449,497.80/674,246.70 = 289,830.60/x
  3. Step 3: Cross multiply
    449,497.80x = 674,246.70 × 289,830.60
  4. Step 4: Simplify right side
    449,497.80x = 195,417,325,609.02
  5. Step 5: Solve for x
    x = 195,417,325,609.02/449,497.80
  6. Step 6: Final answer
    x = 434,745.90

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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.