Home / 505,738,811.60-759,175,087.80-391,230,990.80

Finding the Fourth Proportional to 505,738,811.60, 759,175,087.80 and 391,230,990.80

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Solution

The fourth proportional to 505,738,811.60, 759,175,087.80 and 391,230,990.80 is: 587,285,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,738,811.60 : 759,175,087.80 = 391,230,990.80 : x
  2. Step 2: Convert to fraction form
    505,738,811.60/759,175,087.80 = 391,230,990.80/x
  3. Step 3: Cross multiply
    505,738,811.60x = 759,175,087.80 × 391,230,990.80
  4. Step 4: Simplify right side
    505,738,811.60x = 297,012,821,790,670,976
  5. Step 5: Solve for x
    x = 297,012,821,790,670,976/505,738,811.60
  6. Step 6: Final answer
    x = 587,285,007.55

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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.