Home / 431,738,993.82-647,653,850.73-140,628,812.70

Finding the Fourth Proportional to 431,738,993.82, 647,653,850.73 and 140,628,812.70

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Solution

The fourth proportional to 431,738,993.82, 647,653,850.73 and 140,628,812.70 is: 210,957,994.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,738,993.82 : 647,653,850.73 = 140,628,812.70 : x
  2. Step 2: Convert to fraction form
    431,738,993.82/647,653,850.73 = 140,628,812.70/x
  3. Step 3: Cross multiply
    431,738,993.82x = 647,653,850.73 × 140,628,812.70
  4. Step 4: Simplify right side
    431,738,993.82x = 91,078,792,068,742,928
  5. Step 5: Solve for x
    x = 91,078,792,068,742,928/431,738,993.82
  6. Step 6: Final answer
    x = 210,957,994.00

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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.