Home / 645,540.75-890,846.24-377,268.75

Finding the Fourth Proportional to 645,540.75, 890,846.24 and 377,268.75

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Solution

The fourth proportional to 645,540.75, 890,846.24 and 377,268.75 is: 520,630.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,540.75 : 890,846.24 = 377,268.75 : x
  2. Step 2: Convert to fraction form
    645,540.75/890,846.24 = 377,268.75/x
  3. Step 3: Cross multiply
    645,540.75x = 890,846.24 × 377,268.75
  4. Step 4: Simplify right side
    645,540.75x = 336,088,445,520.66
  5. Step 5: Solve for x
    x = 336,088,445,520.66/645,540.75
  6. Step 6: Final answer
    x = 520,630.88

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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.