Home / 378,502,993.44-522,322,410.96-213,488,186.40

Finding the Fourth Proportional to 378,502,993.44, 522,322,410.96 and 213,488,186.40

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Solution

The fourth proportional to 378,502,993.44, 522,322,410.96 and 213,488,186.40 is: 294,607,086.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,502,993.44 : 522,322,410.96 = 213,488,186.40 : x
  2. Step 2: Convert to fraction form
    378,502,993.44/522,322,410.96 = 213,488,186.40/x
  3. Step 3: Cross multiply
    378,502,993.44x = 522,322,410.96 × 213,488,186.40
  4. Step 4: Simplify right side
    378,502,993.44x = 111,509,664,231,925,888
  5. Step 5: Solve for x
    x = 111,509,664,231,925,888/378,502,993.44
  6. Step 6: Final answer
    x = 294,607,086.77

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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.