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Finding the Fourth Proportional to 664,367.16, 996,900.66 and 290,652.60

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Solution

The fourth proportional to 664,367.16, 996,900.66 and 290,652.60 is: 436,131.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,367.16 : 996,900.66 = 290,652.60 : x
  2. Step 2: Convert to fraction form
    664,367.16/996,900.66 = 290,652.60/x
  3. Step 3: Cross multiply
    664,367.16x = 996,900.66 × 290,652.60
  4. Step 4: Simplify right side
    664,367.16x = 289,751,768,770.72
  5. Step 5: Solve for x
    x = 289,751,768,770.72/664,367.16
  6. Step 6: Final answer
    x = 436,131.99

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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.