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Finding the Fourth Proportional to 645,251.72, 890,558.85 and 373,469.48

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Solution

The fourth proportional to 645,251.72, 890,558.85 and 373,469.48 is: 515,452.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,251.72 : 890,558.85 = 373,469.48 : x
  2. Step 2: Convert to fraction form
    645,251.72/890,558.85 = 373,469.48/x
  3. Step 3: Cross multiply
    645,251.72x = 890,558.85 × 373,469.48
  4. Step 4: Simplify right side
    645,251.72x = 332,596,555,915.60
  5. Step 5: Solve for x
    x = 332,596,555,915.60/645,251.72
  6. Step 6: Final answer
    x = 515,452.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.