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Finding the Fourth Proportional to 446,978,436.07, 670,016,947.76 and 281,100,487.86

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Solution

The fourth proportional to 446,978,436.07, 670,016,947.76 and 281,100,487.86 is: 421,367,286.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,978,436.07 : 670,016,947.76 = 281,100,487.86 : x
  2. Step 2: Convert to fraction form
    446,978,436.07/670,016,947.76 = 281,100,487.86/x
  3. Step 3: Cross multiply
    446,978,436.07x = 670,016,947.76 × 281,100,487.86
  4. Step 4: Simplify right side
    446,978,436.07x = 188,342,090,889,804,128
  5. Step 5: Solve for x
    x = 188,342,090,889,804,128/446,978,436.07
  6. Step 6: Final answer
    x = 421,367,286.86

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Why These Related Problems?

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