Home / 890,821.20-1,336,231.80-839,499.60

Finding the Fourth Proportional to 890,821.20, 1,336,231.80 and 839,499.60

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Solution

The fourth proportional to 890,821.20, 1,336,231.80 and 839,499.60 is: 1,259,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,821.20 : 1,336,231.80 = 839,499.60 : x
  2. Step 2: Convert to fraction form
    890,821.20/1,336,231.80 = 839,499.60/x
  3. Step 3: Cross multiply
    890,821.20x = 1,336,231.80 × 839,499.60
  4. Step 4: Simplify right side
    890,821.20x = 1,121,766,061,607.28
  5. Step 5: Solve for x
    x = 1,121,766,061,607.28/890,821.20
  6. Step 6: Final answer
    x = 1,259,249.40

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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.