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Finding the Fourth Proportional to 667,359.59, 920,958.98 and 361,439.60

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Solution

The fourth proportional to 667,359.59, 920,958.98 and 361,439.60 is: 498,788.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,359.59 : 920,958.98 = 361,439.60 : x
  2. Step 2: Convert to fraction form
    667,359.59/920,958.98 = 361,439.60/x
  3. Step 3: Cross multiply
    667,359.59x = 920,958.98 × 361,439.60
  4. Step 4: Simplify right side
    667,359.59x = 332,871,038,935.62
  5. Step 5: Solve for x
    x = 332,871,038,935.62/667,359.59
  6. Step 6: Final answer
    x = 498,788.13

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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.