Finding the Fourth Proportional to 685,682,821.08, 1,028,796,760.98 and 219,416,086.44
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Solution
The fourth proportional to 685,682,821.08, 1,028,796,760.98 and 219,416,086.44 is: 329,211,338.09
Step by Step Solution
- Step 1: Write the proportion equation
685,682,821.08 : 1,028,796,760.98 = 219,416,086.44 : x - Step 2: Convert to fraction form
685,682,821.08/1,028,796,760.98 = 219,416,086.44/x - Step 3: Cross multiply
685,682,821.08x = 1,028,796,760.98 × 219,416,086.44 - Step 4: Simplify right side
685,682,821.08x = 225,734,559,036,379,712 - Step 5: Solve for x
x = 225,734,559,036,379,712/685,682,821.08 - Step 6: Final answer
x = 329,211,338.09
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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.