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Finding the Fourth Proportional to 636,237.44, 878,007.36 and 349,776

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Solution

The fourth proportional to 636,237.44, 878,007.36 and 349,776 is: 482,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,237.44 : 878,007.36 = 349,776 : x
  2. Step 2: Convert to fraction form
    636,237.44/878,007.36 = 349,776/x
  3. Step 3: Cross multiply
    636,237.44x = 878,007.36 × 349,776
  4. Step 4: Simplify right side
    636,237.44x = 307,105,902,351.36
  5. Step 5: Solve for x
    x = 307,105,902,351.36/636,237.44
  6. Step 6: Final answer
    x = 482,690.71

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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.