Home / 728,392.21-1,004,823.97-486,734.11

Finding the Fourth Proportional to 728,392.21, 1,004,823.97 and 486,734.11

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Solution

The fourth proportional to 728,392.21, 1,004,823.97 and 486,734.11 is: 671,454.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,392.21 : 1,004,823.97 = 486,734.11 : x
  2. Step 2: Convert to fraction form
    728,392.21/1,004,823.97 = 486,734.11/x
  3. Step 3: Cross multiply
    728,392.21x = 1,004,823.97 × 486,734.11
  4. Step 4: Simplify right side
    728,392.21x = 489,082,100,744.62
  5. Step 5: Solve for x
    x = 489,082,100,744.62/728,392.21
  6. Step 6: Final answer
    x = 671,454.33

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1.5x scale

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.