Home / 821,778.20-1,134,032.15-459,205.04

Finding the Fourth Proportional to 821,778.20, 1,134,032.15 and 459,205.04

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Solution

The fourth proportional to 821,778.20, 1,134,032.15 and 459,205.04 is: 633,690.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,778.20 : 1,134,032.15 = 459,205.04 : x
  2. Step 2: Convert to fraction form
    821,778.20/1,134,032.15 = 459,205.04/x
  3. Step 3: Cross multiply
    821,778.20x = 1,134,032.15 × 459,205.04
  4. Step 4: Simplify right side
    821,778.20x = 520,753,278,802.04
  5. Step 5: Solve for x
    x = 520,753,278,802.04/821,778.20
  6. Step 6: Final answer
    x = 633,690.79

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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.