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Finding the Fourth Proportional to 605,861.20, 908,791.80 and 179,412.40

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Solution

The fourth proportional to 605,861.20, 908,791.80 and 179,412.40 is: 269,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,861.20 : 908,791.80 = 179,412.40 : x
  2. Step 2: Convert to fraction form
    605,861.20/908,791.80 = 179,412.40/x
  3. Step 3: Cross multiply
    605,861.20x = 908,791.80 × 179,412.40
  4. Step 4: Simplify right side
    605,861.20x = 163,048,517,938.32
  5. Step 5: Solve for x
    x = 163,048,517,938.32/605,861.20
  6. Step 6: Final answer
    x = 269,118.60

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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.