Finding the Fourth Proportional to 1,297,318,839.64, 1,790,291,125.36 and 702,589,646.32
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Solution
The fourth proportional to 1,297,318,839.64, 1,790,291,125.36 and 702,589,646.32 is: 969,568,906.38
Step by Step Solution
- Step 1: Write the proportion equation
1,297,318,839.64 : 1,790,291,125.36 = 702,589,646.32 : x - Step 2: Convert to fraction form
1,297,318,839.64/1,790,291,125.36 = 702,589,646.32/x - Step 3: Cross multiply
1,297,318,839.64x = 1,790,291,125.36 × 702,589,646.32 - Step 4: Simplify right side
1,297,318,839.64x = 1,257,840,008,576,517,120 - Step 5: Solve for x
x = 1,257,840,008,576,517,120/1,297,318,839.64 - Step 6: Final answer
x = 969,568,906.38
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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.