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Finding the Fourth Proportional to 667,361.42, 920,959.15 and 365,560.46

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Solution

The fourth proportional to 667,361.42, 920,959.15 and 365,560.46 is: 504,473.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,361.42 : 920,959.15 = 365,560.46 : x
  2. Step 2: Convert to fraction form
    667,361.42/920,959.15 = 365,560.46/x
  3. Step 3: Cross multiply
    667,361.42x = 920,959.15 × 365,560.46
  4. Step 4: Simplify right side
    667,361.42x = 336,666,250,515.21
  5. Step 5: Solve for x
    x = 336,666,250,515.21/667,361.42
  6. Step 6: Final answer
    x = 504,473.65

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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.