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Finding the Fourth Proportional to 659,321.60, 989,289.60 and 493,433.60

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Solution

The fourth proportional to 659,321.60, 989,289.60 and 493,433.60 is: 740,380.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,321.60 : 989,289.60 = 493,433.60 : x
  2. Step 2: Convert to fraction form
    659,321.60/989,289.60 = 493,433.60/x
  3. Step 3: Cross multiply
    659,321.60x = 989,289.60 × 493,433.60
  4. Step 4: Simplify right side
    659,321.60x = 488,148,728,770.56
  5. Step 5: Solve for x
    x = 488,148,728,770.56/659,321.60
  6. Step 6: Final answer
    x = 740,380.31

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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.