Home / 515,584.32-772,461.44-215,404.26

Finding the Fourth Proportional to 515,584.32, 772,461.44 and 215,404.26

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Solution

The fourth proportional to 515,584.32, 772,461.44 and 215,404.26 is: 322,724.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,584.32 : 772,461.44 = 215,404.26 : x
  2. Step 2: Convert to fraction form
    515,584.32/772,461.44 = 215,404.26/x
  3. Step 3: Cross multiply
    515,584.32x = 772,461.44 × 215,404.26
  4. Step 4: Simplify right side
    515,584.32x = 166,391,480,999.43
  5. Step 5: Solve for x
    x = 166,391,480,999.43/515,584.32
  6. Step 6: Final answer
    x = 322,724.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.