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Finding the Fourth Proportional to 663,445.62, 993,709.74 and 548,288.31

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Solution

The fourth proportional to 663,445.62, 993,709.74 and 548,288.31 is: 821,226.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,445.62 : 993,709.74 = 548,288.31 : x
  2. Step 2: Convert to fraction form
    663,445.62/993,709.74 = 548,288.31/x
  3. Step 3: Cross multiply
    663,445.62x = 993,709.74 × 548,288.31
  4. Step 4: Simplify right side
    663,445.62x = 544,839,433,975.14
  5. Step 5: Solve for x
    x = 544,839,433,975.14/663,445.62
  6. Step 6: Final answer
    x = 821,226.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.