Home / 619,638.03-855,131.60-387,205.37

Finding the Fourth Proportional to 619,638.03, 855,131.60 and 387,205.37

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Solution

The fourth proportional to 619,638.03, 855,131.60 and 387,205.37 is: 534,362.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,638.03 : 855,131.60 = 387,205.37 : x
  2. Step 2: Convert to fraction form
    619,638.03/855,131.60 = 387,205.37/x
  3. Step 3: Cross multiply
    619,638.03x = 855,131.60 × 387,205.37
  4. Step 4: Simplify right side
    619,638.03x = 331,111,541,365.01
  5. Step 5: Solve for x
    x = 331,111,541,365.01/619,638.03
  6. Step 6: Final answer
    x = 534,362.85

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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.