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Finding the Fourth Proportional to 443,617.40, 664,259.70 and 324,644.60

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Solution

The fourth proportional to 443,617.40, 664,259.70 and 324,644.60 is: 486,113.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,617.40 : 664,259.70 = 324,644.60 : x
  2. Step 2: Convert to fraction form
    443,617.40/664,259.70 = 324,644.60/x
  3. Step 3: Cross multiply
    443,617.40x = 664,259.70 × 324,644.60
  4. Step 4: Simplify right side
    443,617.40x = 215,648,324,602.62
  5. Step 5: Solve for x
    x = 215,648,324,602.62/443,617.40
  6. Step 6: Final answer
    x = 486,113.31

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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.