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Finding the Fourth Proportional to 636,481.98, 878,351.34 and 350,004

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Solution

The fourth proportional to 636,481.98, 878,351.34 and 350,004 is: 483,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,481.98 : 878,351.34 = 350,004 : x
  2. Step 2: Convert to fraction form
    636,481.98/878,351.34 = 350,004/x
  3. Step 3: Cross multiply
    636,481.98x = 878,351.34 × 350,004
  4. Step 4: Simplify right side
    636,481.98x = 307,426,482,405.36
  5. Step 5: Solve for x
    x = 307,426,482,405.36/636,481.98
  6. Step 6: Final answer
    x = 483,008.93

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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.