Home / 812,354.50-1,121,084.23-449,778.35

Finding the Fourth Proportional to 812,354.50, 1,121,084.23 and 449,778.35

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Solution

The fourth proportional to 812,354.50, 1,121,084.23 and 449,778.35 is: 620,713.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,354.50 : 1,121,084.23 = 449,778.35 : x
  2. Step 2: Convert to fraction form
    812,354.50/1,121,084.23 = 449,778.35/x
  3. Step 3: Cross multiply
    812,354.50x = 1,121,084.23 × 449,778.35
  4. Step 4: Simplify right side
    812,354.50x = 504,239,408,450.55
  5. Step 5: Solve for x
    x = 504,239,408,450.55/812,354.50
  6. Step 6: Final answer
    x = 620,713.51

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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.