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Finding the Fourth Proportional to 458,469.70, 687,704.55 and 271,384.90

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Solution

The fourth proportional to 458,469.70, 687,704.55 and 271,384.90 is: 407,077.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,469.70 : 687,704.55 = 271,384.90 : x
  2. Step 2: Convert to fraction form
    458,469.70/687,704.55 = 271,384.90/x
  3. Step 3: Cross multiply
    458,469.70x = 687,704.55 × 271,384.90
  4. Step 4: Simplify right side
    458,469.70x = 186,632,630,531.30
  5. Step 5: Solve for x
    x = 186,632,630,531.30/458,469.70
  6. Step 6: Final answer
    x = 407,077.35

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Similar ratio
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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.