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Finding the Fourth Proportional to 667,232.88, 920,747.16 and 365,420.40

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Solution

The fourth proportional to 667,232.88, 920,747.16 and 365,420.40 is: 504,261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,232.88 : 920,747.16 = 365,420.40 : x
  2. Step 2: Convert to fraction form
    667,232.88/920,747.16 = 365,420.40/x
  3. Step 3: Cross multiply
    667,232.88x = 920,747.16 × 365,420.40
  4. Step 4: Simplify right side
    667,232.88x = 336,459,795,506.06
  5. Step 5: Solve for x
    x = 336,459,795,506.06/667,232.88
  6. Step 6: Final answer
    x = 504,261.41

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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.