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Finding the Fourth Proportional to 636,288.52, 878,080.26 and 349,813.48

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Solution

The fourth proportional to 636,288.52, 878,080.26 and 349,813.48 is: 482,743.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,288.52 : 878,080.26 = 349,813.48 : x
  2. Step 2: Convert to fraction form
    636,288.52/878,080.26 = 349,813.48/x
  3. Step 3: Cross multiply
    636,288.52x = 878,080.26 × 349,813.48
  4. Step 4: Simplify right side
    636,288.52x = 307,164,311,469.91
  5. Step 5: Solve for x
    x = 307,164,311,469.91/636,288.52
  6. Step 6: Final answer
    x = 482,743.76

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1.5x scale

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.