Home / 505,899.20-698,212.10-322,079.06

Finding the Fourth Proportional to 505,899.20, 698,212.10 and 322,079.06

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Solution

The fourth proportional to 505,899.20, 698,212.10 and 322,079.06 is: 444,514.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,899.20 : 698,212.10 = 322,079.06 : x
  2. Step 2: Convert to fraction form
    505,899.20/698,212.10 = 322,079.06/x
  3. Step 3: Cross multiply
    505,899.20x = 698,212.10 × 322,079.06
  4. Step 4: Simplify right side
    505,899.20x = 224,879,491,747.17
  5. Step 5: Solve for x
    x = 224,879,491,747.17/505,899.20
  6. Step 6: Final answer
    x = 444,514.43

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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.