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Finding the Fourth Proportional to 636,838.50, 878,835.82 and 350,357.91

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Solution

The fourth proportional to 636,838.50, 878,835.82 and 350,357.91 is: 483,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,838.50 : 878,835.82 = 350,357.91 : x
  2. Step 2: Convert to fraction form
    636,838.50/878,835.82 = 350,357.91/x
  3. Step 3: Cross multiply
    636,838.50x = 878,835.82 × 350,357.91
  4. Step 4: Simplify right side
    636,838.50x = 307,907,081,128.34
  5. Step 5: Solve for x
    x = 307,907,081,128.34/636,838.50
  6. Step 6: Final answer
    x = 483,493.20

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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.