Home / 621,734.18-857,993.21-353,462.18

Finding the Fourth Proportional to 621,734.18, 857,993.21 and 353,462.18

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Solution

The fourth proportional to 621,734.18, 857,993.21 and 353,462.18 is: 487,777.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,734.18 : 857,993.21 = 353,462.18 : x
  2. Step 2: Convert to fraction form
    621,734.18/857,993.21 = 353,462.18/x
  3. Step 3: Cross multiply
    621,734.18x = 857,993.21 × 353,462.18
  4. Step 4: Simplify right side
    621,734.18x = 303,268,150,431.80
  5. Step 5: Solve for x
    x = 303,268,150,431.80/621,734.18
  6. Step 6: Final answer
    x = 487,777.83

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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.