Home / 861,408.88-1,188,732.36-479,435.80

Finding the Fourth Proportional to 861,408.88, 1,188,732.36 and 479,435.80

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Solution

The fourth proportional to 861,408.88, 1,188,732.36 and 479,435.80 is: 661,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,408.88 : 1,188,732.36 = 479,435.80 : x
  2. Step 2: Convert to fraction form
    861,408.88/1,188,732.36 = 479,435.80/x
  3. Step 3: Cross multiply
    861,408.88x = 1,188,732.36 × 479,435.80
  4. Step 4: Simplify right side
    861,408.88x = 569,920,850,002.49
  5. Step 5: Solve for x
    x = 569,920,850,002.49/861,408.88
  6. Step 6: Final answer
    x = 661,614.78

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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.