Home / 439,310.20-659,742.90-339,712.60

Finding the Fourth Proportional to 439,310.20, 659,742.90 and 339,712.60

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Solution

The fourth proportional to 439,310.20, 659,742.90 and 339,712.60 is: 510,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,310.20 : 659,742.90 = 339,712.60 : x
  2. Step 2: Convert to fraction form
    439,310.20/659,742.90 = 339,712.60/x
  3. Step 3: Cross multiply
    439,310.20x = 659,742.90 × 339,712.60
  4. Step 4: Simplify right side
    439,310.20x = 224,122,975,890.54
  5. Step 5: Solve for x
    x = 224,122,975,890.54/439,310.20
  6. Step 6: Final answer
    x = 510,170.21

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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.