Home / 645,130,669,215.25-890,280,410,660.74-356,098,983,147.97

Finding the Fourth Proportional to 645,130,669,215.25, 890,280,410,660.74 and 356,098,983,147.97

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Solution

The fourth proportional to 645,130,669,215.25, 890,280,410,660.74 and 356,098,983,147.97 is: 491,416,644,845.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,130,669,215.25 : 890,280,410,660.74 = 356,098,983,147.97 : x
  2. Step 2: Convert to fraction form
    645,130,669,215.25/890,280,410,660.74 = 356,098,983,147.97/x
  3. Step 3: Cross multiply
    645,130,669,215.25x = 890,280,410,660.74 × 356,098,983,147.97
  4. Step 4: Simplify right side
    645,130,669,215.25x = 317,027,948,952,846,635,892,736
  5. Step 5: Solve for x
    x = 317,027,948,952,846,635,892,736/645,130,669,215.25
  6. Step 6: Final answer
    x = 491,416,644,845.74

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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.