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Finding the Fourth Proportional to 636,295.50, 878,108.31 and 349,836.30

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Solution

The fourth proportional to 636,295.50, 878,108.31 and 349,836.30 is: 482,785.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,295.50 : 878,108.31 = 349,836.30 : x
  2. Step 2: Convert to fraction form
    636,295.50/878,108.31 = 349,836.30/x
  3. Step 3: Cross multiply
    636,295.50x = 878,108.31 × 349,836.30
  4. Step 4: Simplify right side
    636,295.50x = 307,194,162,169.65
  5. Step 5: Solve for x
    x = 307,194,162,169.65/636,295.50
  6. Step 6: Final answer
    x = 482,785.38

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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.