Home / 658,051.20-985,327.20-420,105.60

Finding the Fourth Proportional to 658,051.20, 985,327.20 and 420,105.60

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Solution

The fourth proportional to 658,051.20, 985,327.20 and 420,105.60 is: 629,041.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,051.20 : 985,327.20 = 420,105.60 : x
  2. Step 2: Convert to fraction form
    658,051.20/985,327.20 = 420,105.60/x
  3. Step 3: Cross multiply
    658,051.20x = 985,327.20 × 420,105.60
  4. Step 4: Simplify right side
    658,051.20x = 413,941,474,552.32
  5. Step 5: Solve for x
    x = 413,941,474,552.32/658,051.20
  6. Step 6: Final answer
    x = 629,041.44

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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.