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Finding the Fourth Proportional to 443,494.75, 664,275.90 and 291,520.27

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Solution

The fourth proportional to 443,494.75, 664,275.90 and 291,520.27 is: 436,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,494.75 : 664,275.90 = 291,520.27 : x
  2. Step 2: Convert to fraction form
    443,494.75/664,275.90 = 291,520.27/x
  3. Step 3: Cross multiply
    443,494.75x = 664,275.90 × 291,520.27
  4. Step 4: Simplify right side
    443,494.75x = 193,649,889,722.49
  5. Step 5: Solve for x
    x = 193,649,889,722.49/443,494.75
  6. Step 6: Final answer
    x = 436,645.28

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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.