Home / 812,359.53-1,121,091.19-449,783.38

Finding the Fourth Proportional to 812,359.53, 1,121,091.19 and 449,783.38

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Solution

The fourth proportional to 812,359.53, 1,121,091.19 and 449,783.38 is: 620,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,359.53 : 1,121,091.19 = 449,783.38 : x
  2. Step 2: Convert to fraction form
    812,359.53/1,121,091.19 = 449,783.38/x
  3. Step 3: Cross multiply
    812,359.53x = 1,121,091.19 × 449,783.38
  4. Step 4: Simplify right side
    812,359.53x = 504,248,180,799.24
  5. Step 5: Solve for x
    x = 504,248,180,799.24/812,359.53
  6. Step 6: Final answer
    x = 620,720.46

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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.