Home / 812,401.34-1,121,176.92-449,858.90

Finding the Fourth Proportional to 812,401.34, 1,121,176.92 and 449,858.90

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Solution

The fourth proportional to 812,401.34, 1,121,176.92 and 449,858.90 is: 620,840.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,401.34 : 1,121,176.92 = 449,858.90 : x
  2. Step 2: Convert to fraction form
    812,401.34/1,121,176.92 = 449,858.90/x
  3. Step 3: Cross multiply
    812,401.34x = 1,121,176.92 × 449,858.90
  4. Step 4: Simplify right side
    812,401.34x = 504,371,415,936.59
  5. Step 5: Solve for x
    x = 504,371,415,936.59/812,401.34
  6. Step 6: Final answer
    x = 620,840.21

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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.