Home / 842,839,954.88-1,263,685,311.68-427,515,916.51

Finding the Fourth Proportional to 842,839,954.88, 1,263,685,311.68 and 427,515,916.51

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Solution

The fourth proportional to 842,839,954.88, 1,263,685,311.68 and 427,515,916.51 is: 640,982,408.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,839,954.88 : 1,263,685,311.68 = 427,515,916.51 : x
  2. Step 2: Convert to fraction form
    842,839,954.88/1,263,685,311.68 = 427,515,916.51/x
  3. Step 3: Cross multiply
    842,839,954.88x = 1,263,685,311.68 × 427,515,916.51
  4. Step 4: Simplify right side
    842,839,954.88x = 540,245,584,196,781,824
  5. Step 5: Solve for x
    x = 540,245,584,196,781,824/842,839,954.88
  6. Step 6: Final answer
    x = 640,982,408.43

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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.