Home / 811,850.32-1,120,355.62-449,299.18

Finding the Fourth Proportional to 811,850.32, 1,120,355.62 and 449,299.18

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Solution

The fourth proportional to 811,850.32, 1,120,355.62 and 449,299.18 is: 620,034.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,850.32 : 1,120,355.62 = 449,299.18 : x
  2. Step 2: Convert to fraction form
    811,850.32/1,120,355.62 = 449,299.18/x
  3. Step 3: Cross multiply
    811,850.32x = 1,120,355.62 × 449,299.18
  4. Step 4: Simplify right side
    811,850.32x = 503,374,861,374.39
  5. Step 5: Solve for x
    x = 503,374,861,374.39/811,850.32
  6. Step 6: Final answer
    x = 620,034.07

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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.