Home / 811,723.80-1,120,180.16-449,162.96

Finding the Fourth Proportional to 811,723.80, 1,120,180.16 and 449,162.96

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Solution

The fourth proportional to 811,723.80, 1,120,180.16 and 449,162.96 is: 619,845.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,723.80 : 1,120,180.16 = 449,162.96 : x
  2. Step 2: Convert to fraction form
    811,723.80/1,120,180.16 = 449,162.96/x
  3. Step 3: Cross multiply
    811,723.80x = 1,120,180.16 × 449,162.96
  4. Step 4: Simplify right side
    811,723.80x = 503,143,436,398.87
  5. Step 5: Solve for x
    x = 503,143,436,398.87/811,723.80
  6. Step 6: Final answer
    x = 619,845.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.