Home / 842,839,954.38-1,263,685,310.93-427,515,916.01

Finding the Fourth Proportional to 842,839,954.38, 1,263,685,310.93 and 427,515,916.01

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Solution

The fourth proportional to 842,839,954.38, 1,263,685,310.93 and 427,515,916.01 is: 640,982,407.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,839,954.38 : 1,263,685,310.93 = 427,515,916.01 : x
  2. Step 2: Convert to fraction form
    842,839,954.38/1,263,685,310.93 = 427,515,916.01/x
  3. Step 3: Cross multiply
    842,839,954.38x = 1,263,685,310.93 × 427,515,916.01
  4. Step 4: Simplify right side
    842,839,954.38x = 540,245,583,245,370,944
  5. Step 5: Solve for x
    x = 540,245,583,245,370,944/842,839,954.38
  6. Step 6: Final answer
    x = 640,982,407.68

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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.