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Finding the Fourth Proportional to 496,505.40, 744,758.10 and 259,920.60

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Solution

The fourth proportional to 496,505.40, 744,758.10 and 259,920.60 is: 389,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,505.40 : 744,758.10 = 259,920.60 : x
  2. Step 2: Convert to fraction form
    496,505.40/744,758.10 = 259,920.60/x
  3. Step 3: Cross multiply
    496,505.40x = 744,758.10 × 259,920.60
  4. Step 4: Simplify right side
    496,505.40x = 193,577,972,206.86
  5. Step 5: Solve for x
    x = 193,577,972,206.86/496,505.40
  6. Step 6: Final answer
    x = 389,880.90

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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.