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Finding the Fourth Proportional to 439,327.20, 659,768.40 and 339,729.60

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Solution

The fourth proportional to 439,327.20, 659,768.40 and 339,729.60 is: 510,195.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,327.20 : 659,768.40 = 339,729.60 : x
  2. Step 2: Convert to fraction form
    439,327.20/659,768.40 = 339,729.60/x
  3. Step 3: Cross multiply
    439,327.20x = 659,768.40 × 339,729.60
  4. Step 4: Simplify right side
    439,327.20x = 224,142,854,624.64
  5. Step 5: Solve for x
    x = 224,142,854,624.64/439,327.20
  6. Step 6: Final answer
    x = 510,195.71

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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.