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Finding the Fourth Proportional to 454,439.70, 681,659.55 and 384,455.70

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Solution

The fourth proportional to 454,439.70, 681,659.55 and 384,455.70 is: 576,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,439.70 : 681,659.55 = 384,455.70 : x
  2. Step 2: Convert to fraction form
    454,439.70/681,659.55 = 384,455.70/x
  3. Step 3: Cross multiply
    454,439.70x = 681,659.55 × 384,455.70
  4. Step 4: Simplify right side
    454,439.70x = 262,067,899,456.94
  5. Step 5: Solve for x
    x = 262,067,899,456.94/454,439.70
  6. Step 6: Final answer
    x = 576,683.55

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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.