Home / 427,172,470.14-640,783,370.64-164,858,382.30

Finding the Fourth Proportional to 427,172,470.14, 640,783,370.64 and 164,858,382.30

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Solution

The fourth proportional to 427,172,470.14, 640,783,370.64 and 164,858,382.30 is: 247,297,092.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,172,470.14 : 640,783,370.64 = 164,858,382.30 : x
  2. Step 2: Convert to fraction form
    427,172,470.14/640,783,370.64 = 164,858,382.30/x
  3. Step 3: Cross multiply
    427,172,470.14x = 640,783,370.64 × 164,858,382.30
  4. Step 4: Simplify right side
    427,172,470.14x = 105,638,509,888,451,728
  5. Step 5: Solve for x
    x = 105,638,509,888,451,728/427,172,470.14
  6. Step 6: Final answer
    x = 247,297,092.56

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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.