Home / 890,809.20-1,336,213.80-839,487.60

Finding the Fourth Proportional to 890,809.20, 1,336,213.80 and 839,487.60

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Solution

The fourth proportional to 890,809.20, 1,336,213.80 and 839,487.60 is: 1,259,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,809.20 : 1,336,213.80 = 839,487.60 : x
  2. Step 2: Convert to fraction form
    890,809.20/1,336,213.80 = 839,487.60/x
  3. Step 3: Cross multiply
    890,809.20x = 1,336,213.80 × 839,487.60
  4. Step 4: Simplify right side
    890,809.20x = 1,121,734,916,048.88
  5. Step 5: Solve for x
    x = 1,121,734,916,048.88/890,809.20
  6. Step 6: Final answer
    x = 1,259,231.40

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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.