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Finding the Fourth Proportional to 667,361.69, 920,958.32 and 361,437.89

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Solution

The fourth proportional to 667,361.69, 920,958.32 and 361,437.89 is: 498,783.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,361.69 : 920,958.32 = 361,437.89 : x
  2. Step 2: Convert to fraction form
    667,361.69/920,958.32 = 361,437.89/x
  3. Step 3: Cross multiply
    667,361.69x = 920,958.32 × 361,437.89
  4. Step 4: Simplify right side
    667,361.69x = 332,869,228,257.55
  5. Step 5: Solve for x
    x = 332,869,228,257.55/667,361.69
  6. Step 6: Final answer
    x = 498,783.84

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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.