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Finding the Fourth Proportional to 659,744.73, 989,912.25 and 379,261.98

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Solution

The fourth proportional to 659,744.73, 989,912.25 and 379,261.98 is: 569,062.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,744.73 : 989,912.25 = 379,261.98 : x
  2. Step 2: Convert to fraction form
    659,744.73/989,912.25 = 379,261.98/x
  3. Step 3: Cross multiply
    659,744.73x = 989,912.25 × 379,261.98
  4. Step 4: Simplify right side
    659,744.73x = 375,436,079,961.26
  5. Step 5: Solve for x
    x = 375,436,079,961.26/659,744.73
  6. Step 6: Final answer
    x = 569,062.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.