Home / 419,918.56-579,131.09-354,826.28

Finding the Fourth Proportional to 419,918.56, 579,131.09 and 354,826.28

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Solution

The fourth proportional to 419,918.56, 579,131.09 and 354,826.28 is: 489,359.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,918.56 : 579,131.09 = 354,826.28 : x
  2. Step 2: Convert to fraction form
    419,918.56/579,131.09 = 354,826.28/x
  3. Step 3: Cross multiply
    419,918.56x = 579,131.09 × 354,826.28
  4. Step 4: Simplify right side
    419,918.56x = 205,490,930,297.05
  5. Step 5: Solve for x
    x = 205,490,930,297.05/419,918.56
  6. Step 6: Final answer
    x = 489,359.01

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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.