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Finding the Fourth Proportional to 683,692.40, 943,491.90 and 377,789.88

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Solution

The fourth proportional to 683,692.40, 943,491.90 and 377,789.88 is: 521,348.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,692.40 : 943,491.90 = 377,789.88 : x
  2. Step 2: Convert to fraction form
    683,692.40/943,491.90 = 377,789.88/x
  3. Step 3: Cross multiply
    683,692.40x = 943,491.90 × 377,789.88
  4. Step 4: Simplify right side
    683,692.40x = 356,441,691,681.97
  5. Step 5: Solve for x
    x = 356,441,691,681.97/683,692.40
  6. Step 6: Final answer
    x = 521,348.04

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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.