Home / 685,660,183.10-946,179,383.93-388,304,553.14

Finding the Fourth Proportional to 685,660,183.10, 946,179,383.93 and 388,304,553.14

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Solution

The fourth proportional to 685,660,183.10, 946,179,383.93 and 388,304,553.14 is: 535,842,348.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,660,183.10 : 946,179,383.93 = 388,304,553.14 : x
  2. Step 2: Convert to fraction form
    685,660,183.10/946,179,383.93 = 388,304,553.14/x
  3. Step 3: Cross multiply
    685,660,183.10x = 946,179,383.93 × 388,304,553.14
  4. Step 4: Simplify right side
    685,660,183.10x = 367,405,762,860,546,688
  5. Step 5: Solve for x
    x = 367,405,762,860,546,688/685,660,183.10
  6. Step 6: Final answer
    x = 535,842,348.61

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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.