Home / 1,212,961,218.87-1,814,654,621.55-918,703,997.88

Finding the Fourth Proportional to 1,212,961,218.87, 1,814,654,621.55 and 918,703,997.88

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Solution

The fourth proportional to 1,212,961,218.87, 1,814,654,621.55 and 918,703,997.88 is: 1,374,430,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,961,218.87 : 1,814,654,621.55 = 918,703,997.88 : x
  2. Step 2: Convert to fraction form
    1,212,961,218.87/1,814,654,621.55 = 918,703,997.88/x
  3. Step 3: Cross multiply
    1,212,961,218.87x = 1,814,654,621.55 × 918,703,997.88
  4. Step 4: Simplify right side
    1,212,961,218.87x = 1,667,130,455,589,403,392
  5. Step 5: Solve for x
    x = 1,667,130,455,589,403,392/1,212,961,218.87
  6. Step 6: Final answer
    x = 1,374,430,138.12

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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.