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Finding the Fourth Proportional to 539,901.45, 810,016.20 and 303,085.80

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Solution

The fourth proportional to 539,901.45, 810,016.20 and 303,085.80 is: 454,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,901.45 : 810,016.20 = 303,085.80 : x
  2. Step 2: Convert to fraction form
    539,901.45/810,016.20 = 303,085.80/x
  3. Step 3: Cross multiply
    539,901.45x = 810,016.20 × 303,085.80
  4. Step 4: Simplify right side
    539,901.45x = 245,504,407,989.96
  5. Step 5: Solve for x
    x = 245,504,407,989.96/539,901.45
  6. Step 6: Final answer
    x = 454,720.78

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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.