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Finding the Fourth Proportional to 667,242.32, 920,803.56 and 365,438.48

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Solution

The fourth proportional to 667,242.32, 920,803.56 and 365,438.48 is: 504,310.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,242.32 : 920,803.56 = 365,438.48 : x
  2. Step 2: Convert to fraction form
    667,242.32/920,803.56 = 365,438.48/x
  3. Step 3: Cross multiply
    667,242.32x = 920,803.56 × 365,438.48
  4. Step 4: Simplify right side
    667,242.32x = 336,497,053,344.99
  5. Step 5: Solve for x
    x = 336,497,053,344.99/667,242.32
  6. Step 6: Final answer
    x = 504,310.12

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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.