Home / 401,277,400,889.64-601,972,644,155.34-128,910,320,863.56

Finding the Fourth Proportional to 401,277,400,889.64, 601,972,644,155.34 and 128,910,320,863.56

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Solution

The fourth proportional to 401,277,400,889.64, 601,972,644,155.34 and 128,910,320,863.56 is: 193,383,645,670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,277,400,889.64 : 601,972,644,155.34 = 128,910,320,863.56 : x
  2. Step 2: Convert to fraction form
    401,277,400,889.64/601,972,644,155.34 = 128,910,320,863.56/x
  3. Step 3: Cross multiply
    401,277,400,889.64x = 601,972,644,155.34 × 128,910,320,863.56
  4. Step 4: Simplify right side
    401,277,400,889.64x = 77,600,486,709,150,500,257,792
  5. Step 5: Solve for x
    x = 77,600,486,709,150,500,257,792/401,277,400,889.64
  6. Step 6: Final answer
    x = 193,383,645,670.32

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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.