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Finding the Fourth Proportional to 488,991.40, 735,455.40 and 437,815.60

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Solution

The fourth proportional to 488,991.40, 735,455.40 and 437,815.60 is: 658,485.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,991.40 : 735,455.40 = 437,815.60 : x
  2. Step 2: Convert to fraction form
    488,991.40/735,455.40 = 437,815.60/x
  3. Step 3: Cross multiply
    488,991.40x = 735,455.40 × 437,815.60
  4. Step 4: Simplify right side
    488,991.40x = 321,993,847,224.24
  5. Step 5: Solve for x
    x = 321,993,847,224.24/488,991.40
  6. Step 6: Final answer
    x = 658,485.71

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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.