Home / 685,129,340.37-945,476,105.67-371,863,553.52

Finding the Fourth Proportional to 685,129,340.37, 945,476,105.67 and 371,863,553.52

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Solution

The fourth proportional to 685,129,340.37, 945,476,105.67 and 371,863,553.52 is: 513,170,409.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,129,340.37 : 945,476,105.67 = 371,863,553.52 : x
  2. Step 2: Convert to fraction form
    685,129,340.37/945,476,105.67 = 371,863,553.52/x
  3. Step 3: Cross multiply
    685,129,340.37x = 945,476,105.67 × 371,863,553.52
  4. Step 4: Simplify right side
    685,129,340.37x = 351,588,104,422,697,216
  5. Step 5: Solve for x
    x = 351,588,104,422,697,216/685,129,340.37
  6. Step 6: Final answer
    x = 513,170,409.89

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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.