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Finding the Fourth Proportional to 494,417.80, 741,626.70 and 120,440.80

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Solution

The fourth proportional to 494,417.80, 741,626.70 and 120,440.80 is: 180,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,417.80 : 741,626.70 = 120,440.80 : x
  2. Step 2: Convert to fraction form
    494,417.80/741,626.70 = 120,440.80/x
  3. Step 3: Cross multiply
    494,417.80x = 741,626.70 × 120,440.80
  4. Step 4: Simplify right side
    494,417.80x = 89,322,113,049.36
  5. Step 5: Solve for x
    x = 89,322,113,049.36/494,417.80
  6. Step 6: Final answer
    x = 180,661.20

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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.