Home / 391,524.20-587,286.30-346,909.40

Finding the Fourth Proportional to 391,524.20, 587,286.30 and 346,909.40

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Solution

The fourth proportional to 391,524.20, 587,286.30 and 346,909.40 is: 520,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,524.20 : 587,286.30 = 346,909.40 : x
  2. Step 2: Convert to fraction form
    391,524.20/587,286.30 = 346,909.40/x
  3. Step 3: Cross multiply
    391,524.20x = 587,286.30 × 346,909.40
  4. Step 4: Simplify right side
    391,524.20x = 203,735,137,961.22
  5. Step 5: Solve for x
    x = 203,735,137,961.22/391,524.20
  6. Step 6: Final answer
    x = 520,364.10

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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.