Home / 409,056.30-613,584.45-128,573.55

Finding the Fourth Proportional to 409,056.30, 613,584.45 and 128,573.55

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Solution

The fourth proportional to 409,056.30, 613,584.45 and 128,573.55 is: 192,860.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,056.30 : 613,584.45 = 128,573.55 : x
  2. Step 2: Convert to fraction form
    409,056.30/613,584.45 = 128,573.55/x
  3. Step 3: Cross multiply
    409,056.30x = 613,584.45 × 128,573.55
  4. Step 4: Simplify right side
    409,056.30x = 78,890,730,961.30
  5. Step 5: Solve for x
    x = 78,890,730,961.30/409,056.30
  6. Step 6: Final answer
    x = 192,860.33

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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.