Home / 515,569,694,775.76-711,391,729,611.64-287,193,253,439.44

Finding the Fourth Proportional to 515,569,694,775.76, 711,391,729,611.64 and 287,193,253,439.44

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Solution

The fourth proportional to 515,569,694,775.76, 711,391,729,611.64 and 287,193,253,439.44 is: 396,274,077,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,569,694,775.76 : 711,391,729,611.64 = 287,193,253,439.44 : x
  2. Step 2: Convert to fraction form
    515,569,694,775.76/711,391,729,611.64 = 287,193,253,439.44/x
  3. Step 3: Cross multiply
    515,569,694,775.76x = 711,391,729,611.64 × 287,193,253,439.44
  4. Step 4: Simplify right side
    515,569,694,775.76x = 204,306,905,297,077,305,081,856
  5. Step 5: Solve for x
    x = 204,306,905,297,077,305,081,856/515,569,694,775.76
  6. Step 6: Final answer
    x = 396,274,077,718.90

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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.