Home / 728,391.21-1,004,822.60-486,733.11

Finding the Fourth Proportional to 728,391.21, 1,004,822.60 and 486,733.11

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Solution

The fourth proportional to 728,391.21, 1,004,822.60 and 486,733.11 is: 671,452.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,391.21 : 1,004,822.60 = 486,733.11 : x
  2. Step 2: Convert to fraction form
    728,391.21/1,004,822.60 = 486,733.11/x
  3. Step 3: Cross multiply
    728,391.21x = 1,004,822.60 × 486,733.11
  4. Step 4: Simplify right side
    728,391.21x = 489,080,426,662.62
  5. Step 5: Solve for x
    x = 489,080,426,662.62/728,391.21
  6. Step 6: Final answer
    x = 671,452.95

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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.