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Finding the Fourth Proportional to 667,230.88, 920,744.40 and 365,418.40

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Solution

The fourth proportional to 667,230.88, 920,744.40 and 365,418.40 is: 504,258.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,230.88 : 920,744.40 = 365,418.40 : x
  2. Step 2: Convert to fraction form
    667,230.88/920,744.40 = 365,418.40/x
  3. Step 3: Cross multiply
    667,230.88x = 920,744.40 × 365,418.40
  4. Step 4: Simplify right side
    667,230.88x = 336,456,945,456.96
  5. Step 5: Solve for x
    x = 336,456,945,456.96/667,230.88
  6. Step 6: Final answer
    x = 504,258.65

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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.