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Finding the Fourth Proportional to 663,195.60, 993,772.80 and 493,921.80

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Solution

The fourth proportional to 663,195.60, 993,772.80 and 493,921.80 is: 740,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,195.60 : 993,772.80 = 493,921.80 : x
  2. Step 2: Convert to fraction form
    663,195.60/993,772.80 = 493,921.80/x
  3. Step 3: Cross multiply
    663,195.60x = 993,772.80 × 493,921.80
  4. Step 4: Simplify right side
    663,195.60x = 490,846,050,167.04
  5. Step 5: Solve for x
    x = 490,846,050,167.04/663,195.60
  6. Step 6: Final answer
    x = 740,122.60

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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.