Home / 19,321,997,005.12-28,978,208,601.84-8,279,260,836.16

Finding the Fourth Proportional to 19,321,997,005.12, 28,978,208,601.84 and 8,279,260,836.16

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Solution

The fourth proportional to 19,321,997,005.12, 28,978,208,601.84 and 8,279,260,836.16 is: 12,416,840,118.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321,997,005.12 : 28,978,208,601.84 = 8,279,260,836.16 : x
  2. Step 2: Convert to fraction form
    19,321,997,005.12/28,978,208,601.84 = 8,279,260,836.16/x
  3. Step 3: Cross multiply
    19,321,997,005.12x = 28,978,208,601.84 × 8,279,260,836.16
  4. Step 4: Simplify right side
    19,321,997,005.12x = 239,918,147,579,288,748,032
  5. Step 5: Solve for x
    x = 239,918,147,579,288,748,032/19,321,997,005.12
  6. Step 6: Final answer
    x = 12,416,840,118.32

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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.