Home / 579,249.20-799,411.10-321,207.05

Finding the Fourth Proportional to 579,249.20, 799,411.10 and 321,207.05

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Solution

The fourth proportional to 579,249.20, 799,411.10 and 321,207.05 is: 443,291.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,249.20 : 799,411.10 = 321,207.05 : x
  2. Step 2: Convert to fraction form
    579,249.20/799,411.10 = 321,207.05/x
  3. Step 3: Cross multiply
    579,249.20x = 799,411.10 × 321,207.05
  4. Step 4: Simplify right side
    579,249.20x = 256,776,481,560.75
  5. Step 5: Solve for x
    x = 256,776,481,560.75/579,249.20
  6. Step 6: Final answer
    x = 443,291.90

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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.