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Finding the Fourth Proportional to 636,474.56, 878,356.48 and 350,006.72

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Solution

The fourth proportional to 636,474.56, 878,356.48 and 350,006.72 is: 483,021.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,474.56 : 878,356.48 = 350,006.72 : x
  2. Step 2: Convert to fraction form
    636,474.56/878,356.48 = 350,006.72/x
  3. Step 3: Cross multiply
    636,474.56x = 878,356.48 × 350,006.72
  4. Step 4: Simplify right side
    636,474.56x = 307,430,670,555.55
  5. Step 5: Solve for x
    x = 307,430,670,555.55/636,474.56
  6. Step 6: Final answer
    x = 483,021.14

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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.