Home / 854,771.20-1,179,213.60-515,046.40

Finding the Fourth Proportional to 854,771.20, 1,179,213.60 and 515,046.40

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Solution

The fourth proportional to 854,771.20, 1,179,213.60 and 515,046.40 is: 710,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,771.20 : 1,179,213.60 = 515,046.40 : x
  2. Step 2: Convert to fraction form
    854,771.20/1,179,213.60 = 515,046.40/x
  3. Step 3: Cross multiply
    854,771.20x = 1,179,213.60 × 515,046.40
  4. Step 4: Simplify right side
    854,771.20x = 607,349,719,511.04
  5. Step 5: Solve for x
    x = 607,349,719,511.04/854,771.20
  6. Step 6: Final answer
    x = 710,540.69

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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.