Home / 408,089,626.80-612,134,440.20-392,217,255.60

Finding the Fourth Proportional to 408,089,626.80, 612,134,440.20 and 392,217,255.60

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Solution

The fourth proportional to 408,089,626.80, 612,134,440.20 and 392,217,255.60 is: 588,325,883.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,089,626.80 : 612,134,440.20 = 392,217,255.60 : x
  2. Step 2: Convert to fraction form
    408,089,626.80/612,134,440.20 = 392,217,255.60/x
  3. Step 3: Cross multiply
    408,089,626.80x = 612,134,440.20 × 392,217,255.60
  4. Step 4: Simplify right side
    408,089,626.80x = 240,089,690,193,486,336
  5. Step 5: Solve for x
    x = 240,089,690,193,486,336/408,089,626.80
  6. Step 6: Final answer
    x = 588,325,883.40

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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.