Finding the Fourth Proportional to 1,311,091,790.97, 1,809,252,832.33 and 716,396,690.53
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Solution
The fourth proportional to 1,311,091,790.97, 1,809,252,832.33 and 716,396,690.53 is: 988,598,014.52
Step by Step Solution
- Step 1: Write the proportion equation
1,311,091,790.97 : 1,809,252,832.33 = 716,396,690.53 : x - Step 2: Convert to fraction form
1,311,091,790.97/1,809,252,832.33 = 716,396,690.53/x - Step 3: Cross multiply
1,311,091,790.97x = 1,809,252,832.33 × 716,396,690.53 - Step 4: Simplify right side
1,311,091,790.97x = 1,296,142,741,409,658,880 - Step 5: Solve for x
x = 1,296,142,741,409,658,880/1,311,091,790.97 - Step 6: Final answer
x = 988,598,014.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.