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Finding the Fourth Proportional to 559,619.80, 839,121.90 and 382,327

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Solution

The fourth proportional to 559,619.80, 839,121.90 and 382,327 is: 573,280.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,619.80 : 839,121.90 = 382,327 : x
  2. Step 2: Convert to fraction form
    559,619.80/839,121.90 = 382,327/x
  3. Step 3: Cross multiply
    559,619.80x = 839,121.90 × 382,327
  4. Step 4: Simplify right side
    559,619.80x = 320,818,958,661.30
  5. Step 5: Solve for x
    x = 320,818,958,661.30/559,619.80
  6. Step 6: Final answer
    x = 573,280.21

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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.