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Finding the Fourth Proportional to 667,359.42, 920,956.39 and 365,558.46

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Solution

The fourth proportional to 667,359.42, 920,956.39 and 365,558.46 is: 504,470.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,359.42 : 920,956.39 = 365,558.46 : x
  2. Step 2: Convert to fraction form
    667,359.42/920,956.39 = 365,558.46/x
  3. Step 3: Cross multiply
    667,359.42x = 920,956.39 × 365,558.46
  4. Step 4: Simplify right side
    667,359.42x = 336,663,399,655.56
  5. Step 5: Solve for x
    x = 336,663,399,655.56/667,359.42
  6. Step 6: Final answer
    x = 504,470.89

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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.