Home / 811,008,010.20-1,216,512,015.30-205,848,586.20

Finding the Fourth Proportional to 811,008,010.20, 1,216,512,015.30 and 205,848,586.20

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Solution

The fourth proportional to 811,008,010.20, 1,216,512,015.30 and 205,848,586.20 is: 308,772,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,008,010.20 : 1,216,512,015.30 = 205,848,586.20 : x
  2. Step 2: Convert to fraction form
    811,008,010.20/1,216,512,015.30 = 205,848,586.20/x
  3. Step 3: Cross multiply
    811,008,010.20x = 1,216,512,015.30 × 205,848,586.20
  4. Step 4: Simplify right side
    811,008,010.20x = 250,417,278,444,817,760
  5. Step 5: Solve for x
    x = 250,417,278,444,817,760/811,008,010.20
  6. Step 6: Final answer
    x = 308,772,879.30

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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.