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Finding the Fourth Proportional to 561,361.98, 774,679.41 and 303,238.88

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Solution

The fourth proportional to 561,361.98, 774,679.41 and 303,238.88 is: 418,469.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,361.98 : 774,679.41 = 303,238.88 : x
  2. Step 2: Convert to fraction form
    561,361.98/774,679.41 = 303,238.88/x
  3. Step 3: Cross multiply
    561,361.98x = 774,679.41 × 303,238.88
  4. Step 4: Simplify right side
    561,361.98x = 234,912,916,647.46
  5. Step 5: Solve for x
    x = 234,912,916,647.46/561,361.98
  6. Step 6: Final answer
    x = 418,469.59

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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.