Home / 685,629,763.44-946,227,426.21-388,324,893.84

Finding the Fourth Proportional to 685,629,763.44, 946,227,426.21 and 388,324,893.84

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Solution

The fourth proportional to 685,629,763.44, 946,227,426.21 and 388,324,893.84 is: 535,921,403.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,629,763.44 : 946,227,426.21 = 388,324,893.84 : x
  2. Step 2: Convert to fraction form
    685,629,763.44/946,227,426.21 = 388,324,893.84/x
  3. Step 3: Cross multiply
    685,629,763.44x = 946,227,426.21 × 388,324,893.84
  4. Step 4: Simplify right side
    685,629,763.44x = 367,443,664,831,494,656
  5. Step 5: Solve for x
    x = 367,443,664,831,494,656/685,629,763.44
  6. Step 6: Final answer
    x = 535,921,403.10

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.