Home / 728,403.46-1,004,839.50-486,745.36

Finding the Fourth Proportional to 728,403.46, 1,004,839.50 and 486,745.36

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Solution

The fourth proportional to 728,403.46, 1,004,839.50 and 486,745.36 is: 671,469.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,403.46 : 1,004,839.50 = 486,745.36 : x
  2. Step 2: Convert to fraction form
    728,403.46/1,004,839.50 = 486,745.36/x
  3. Step 3: Cross multiply
    728,403.46x = 1,004,839.50 × 486,745.36
  4. Step 4: Simplify right side
    728,403.46x = 489,100,964,169.72
  5. Step 5: Solve for x
    x = 489,100,964,169.72/728,403.46
  6. Step 6: Final answer
    x = 671,469.85

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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.