Home / 812,354.56-1,121,084.32-449,778.41

Finding the Fourth Proportional to 812,354.56, 1,121,084.32 and 449,778.41

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Solution

The fourth proportional to 812,354.56, 1,121,084.32 and 449,778.41 is: 620,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,354.56 : 1,121,084.32 = 449,778.41 : x
  2. Step 2: Convert to fraction form
    812,354.56/1,121,084.32 = 449,778.41/x
  3. Step 3: Cross multiply
    812,354.56x = 1,121,084.32 × 449,778.41
  4. Step 4: Simplify right side
    812,354.56x = 504,239,522,925.53
  5. Step 5: Solve for x
    x = 504,239,522,925.53/812,354.56
  6. Step 6: Final answer
    x = 620,713.60

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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.