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Finding the Fourth Proportional to 557,283.80, 769,287.05 and 376,240.95

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Solution

The fourth proportional to 557,283.80, 769,287.05 and 376,240.95 is: 519,371.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,283.80 : 769,287.05 = 376,240.95 : x
  2. Step 2: Convert to fraction form
    557,283.80/769,287.05 = 376,240.95/x
  3. Step 3: Cross multiply
    557,283.80x = 769,287.05 × 376,240.95
  4. Step 4: Simplify right side
    557,283.80x = 289,437,288,633.49
  5. Step 5: Solve for x
    x = 289,437,288,633.49/557,283.80
  6. Step 6: Final answer
    x = 519,371.44

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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.