Home / 685,589,647.05-1,028,423,335.95-219,292,028.73

Finding the Fourth Proportional to 685,589,647.05, 1,028,423,335.95 and 219,292,028.73

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Solution

The fourth proportional to 685,589,647.05, 1,028,423,335.95 and 219,292,028.73 is: 328,950,474.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,589,647.05 : 1,028,423,335.95 = 219,292,028.73 : x
  2. Step 2: Convert to fraction form
    685,589,647.05/1,028,423,335.95 = 219,292,028.73/x
  3. Step 3: Cross multiply
    685,589,647.05x = 1,028,423,335.95 × 219,292,028.73
  4. Step 4: Simplify right side
    685,589,647.05x = 225,525,039,733,749,856
  5. Step 5: Solve for x
    x = 225,525,039,733,749,856/685,589,647.05
  6. Step 6: Final answer
    x = 328,950,474.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.