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Finding the Fourth Proportional to 1,641,958,412.78, 2,265,901,891.83 and 889,271,626.32

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Solution

The fourth proportional to 1,641,958,412.78, 2,265,901,891.83 and 889,271,626.32 is: 1,227,194,455.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641,958,412.78 : 2,265,901,891.83 = 889,271,626.32 : x
  2. Step 2: Convert to fraction form
    1,641,958,412.78/2,265,901,891.83 = 889,271,626.32/x
  3. Step 3: Cross multiply
    1,641,958,412.78x = 2,265,901,891.83 × 889,271,626.32
  4. Step 4: Simplify right side
    1,641,958,412.78x = 2,015,002,260,429,228,800
  5. Step 5: Solve for x
    x = 2,015,002,260,429,228,800/1,641,958,412.78
  6. Step 6: Final answer
    x = 1,227,194,455.56

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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.