Home / 928,221.30-1,392,137.55-455,246.10

Finding the Fourth Proportional to 928,221.30, 1,392,137.55 and 455,246.10

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Solution

The fourth proportional to 928,221.30, 1,392,137.55 and 455,246.10 is: 682,773.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,221.30 : 1,392,137.55 = 455,246.10 : x
  2. Step 2: Convert to fraction form
    928,221.30/1,392,137.55 = 455,246.10/x
  3. Step 3: Cross multiply
    928,221.30x = 1,392,137.55 × 455,246.10
  4. Step 4: Simplify right side
    928,221.30x = 633,765,190,301.06
  5. Step 5: Solve for x
    x = 633,765,190,301.06/928,221.30
  6. Step 6: Final answer
    x = 682,773.81

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1.5x scale

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.