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Finding the Fourth Proportional to 493,992.70, 740,989.05 and 488,743.90

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Solution

The fourth proportional to 493,992.70, 740,989.05 and 488,743.90 is: 733,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,992.70 : 740,989.05 = 488,743.90 : x
  2. Step 2: Convert to fraction form
    493,992.70/740,989.05 = 488,743.90/x
  3. Step 3: Cross multiply
    493,992.70x = 740,989.05 × 488,743.90
  4. Step 4: Simplify right side
    493,992.70x = 362,153,878,154.30
  5. Step 5: Solve for x
    x = 362,153,878,154.30/493,992.70
  6. Step 6: Final answer
    x = 733,115.85

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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.