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Finding the Fourth Proportional to 559,620.80, 839,123.40 and 382,328

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Solution

The fourth proportional to 559,620.80, 839,123.40 and 382,328 is: 573,281.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,620.80 : 839,123.40 = 382,328 : x
  2. Step 2: Convert to fraction form
    559,620.80/839,123.40 = 382,328/x
  3. Step 3: Cross multiply
    559,620.80x = 839,123.40 × 382,328
  4. Step 4: Simplify right side
    559,620.80x = 320,820,371,275.20
  5. Step 5: Solve for x
    x = 320,820,371,275.20/559,620.80
  6. Step 6: Final answer
    x = 573,281.71

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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.