Home / 408,089,639.80-612,134,459.70-392,217,268.60

Finding the Fourth Proportional to 408,089,639.80, 612,134,459.70 and 392,217,268.60

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Solution

The fourth proportional to 408,089,639.80, 612,134,459.70 and 392,217,268.60 is: 588,325,902.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,089,639.80 : 612,134,459.70 = 392,217,268.60 : x
  2. Step 2: Convert to fraction form
    408,089,639.80/612,134,459.70 = 392,217,268.60/x
  3. Step 3: Cross multiply
    408,089,639.80x = 612,134,459.70 × 392,217,268.60
  4. Step 4: Simplify right side
    408,089,639.80x = 240,089,705,799,470,816
  5. Step 5: Solve for x
    x = 240,089,705,799,470,816/408,089,639.80
  6. Step 6: Final answer
    x = 588,325,902.90

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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.