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Finding the Fourth Proportional to 663,446.62, 993,711.24 and 548,289.31

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Solution

The fourth proportional to 663,446.62, 993,711.24 and 548,289.31 is: 821,228.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,446.62 : 993,711.24 = 548,289.31 : x
  2. Step 2: Convert to fraction form
    663,446.62/993,711.24 = 548,289.31/x
  3. Step 3: Cross multiply
    663,446.62x = 993,711.24 × 548,289.31
  4. Step 4: Simplify right side
    663,446.62x = 544,841,250,118.84
  5. Step 5: Solve for x
    x = 544,841,250,118.84/663,446.62
  6. Step 6: Final answer
    x = 821,228.47

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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.