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Finding the Fourth Proportional to 559,860.80, 839,791.20 and 419,892.80

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Solution

The fourth proportional to 559,860.80, 839,791.20 and 419,892.80 is: 629,839.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,860.80 : 839,791.20 = 419,892.80 : x
  2. Step 2: Convert to fraction form
    559,860.80/839,791.20 = 419,892.80/x
  3. Step 3: Cross multiply
    559,860.80x = 839,791.20 × 419,892.80
  4. Step 4: Simplify right side
    559,860.80x = 352,622,278,383.36
  5. Step 5: Solve for x
    x = 352,622,278,383.36/559,860.80
  6. Step 6: Final answer
    x = 629,839.20

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1.5x scale

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.