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Finding the Fourth Proportional to 446,978,435.81, 670,016,947.39 and 281,100,487.61

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Solution

The fourth proportional to 446,978,435.81, 670,016,947.39 and 281,100,487.61 is: 421,367,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,978,435.81 : 670,016,947.39 = 281,100,487.61 : x
  2. Step 2: Convert to fraction form
    446,978,435.81/670,016,947.39 = 281,100,487.61/x
  3. Step 3: Cross multiply
    446,978,435.81x = 670,016,947.39 × 281,100,487.61
  4. Step 4: Simplify right side
    446,978,435.81x = 188,342,090,619,265,024
  5. Step 5: Solve for x
    x = 188,342,090,619,265,024/446,978,435.81
  6. Step 6: Final answer
    x = 421,367,286.49

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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.