Home / 1,276,380,636.51-1,761,405,351.96-689,669,772.51

Finding the Fourth Proportional to 1,276,380,636.51, 1,761,405,351.96 and 689,669,772.51

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Solution

The fourth proportional to 1,276,380,636.51, 1,761,405,351.96 and 689,669,772.51 is: 951,744,325.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,380,636.51 : 1,761,405,351.96 = 689,669,772.51 : x
  2. Step 2: Convert to fraction form
    1,276,380,636.51/1,761,405,351.96 = 689,669,772.51/x
  3. Step 3: Cross multiply
    1,276,380,636.51x = 1,761,405,351.96 × 689,669,772.51
  4. Step 4: Simplify right side
    1,276,380,636.51x = 1,214,788,028,384,149,760
  5. Step 5: Solve for x
    x = 1,214,788,028,384,149,760/1,276,380,636.51
  6. Step 6: Final answer
    x = 951,744,325.82

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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.