Home / 840,311.60-1,259,416.20-419,704.88

Finding the Fourth Proportional to 840,311.60, 1,259,416.20 and 419,704.88

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Solution

The fourth proportional to 840,311.60, 1,259,416.20 and 419,704.88 is: 629,032.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,311.60 : 1,259,416.20 = 419,704.88 : x
  2. Step 2: Convert to fraction form
    840,311.60/1,259,416.20 = 419,704.88/x
  3. Step 3: Cross multiply
    840,311.60x = 1,259,416.20 × 419,704.88
  4. Step 4: Simplify right side
    840,311.60x = 528,583,125,091.06
  5. Step 5: Solve for x
    x = 528,583,125,091.06/840,311.60
  6. Step 6: Final answer
    x = 629,032.28

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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.