Home / 685,629,761.94-946,227,424.14-388,324,892.34

Finding the Fourth Proportional to 685,629,761.94, 946,227,424.14 and 388,324,892.34

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Solution

The fourth proportional to 685,629,761.94, 946,227,424.14 and 388,324,892.34 is: 535,921,401.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,629,761.94 : 946,227,424.14 = 388,324,892.34 : x
  2. Step 2: Convert to fraction form
    685,629,761.94/946,227,424.14 = 388,324,892.34/x
  3. Step 3: Cross multiply
    685,629,761.94x = 946,227,424.14 × 388,324,892.34
  4. Step 4: Simplify right side
    685,629,761.94x = 367,443,662,608,320,960
  5. Step 5: Solve for x
    x = 367,443,662,608,320,960/685,629,761.94
  6. Step 6: Final answer
    x = 535,921,401.03

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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.