Home / 807,422,716.70-1,211,700,945.45-347,690,822.30

Finding the Fourth Proportional to 807,422,716.70, 1,211,700,945.45 and 347,690,822.30

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Solution

The fourth proportional to 807,422,716.70, 1,211,700,945.45 and 347,690,822.30 is: 521,780,338.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,422,716.70 : 1,211,700,945.45 = 347,690,822.30 : x
  2. Step 2: Convert to fraction form
    807,422,716.70/1,211,700,945.45 = 347,690,822.30/x
  3. Step 3: Cross multiply
    807,422,716.70x = 1,211,700,945.45 × 347,690,822.30
  4. Step 4: Simplify right side
    807,422,716.70x = 421,297,298,105,197,952
  5. Step 5: Solve for x
    x = 421,297,298,105,197,952/807,422,716.70
  6. Step 6: Final answer
    x = 521,780,338.09

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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.