Finding the Fourth Proportional to 1,297,318,452.39, 1,790,290,591.79 and 702,589,259.07
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Solution
The fourth proportional to 1,297,318,452.39, 1,790,290,591.79 and 702,589,259.07 is: 969,568,372.43
Step by Step Solution
- Step 1: Write the proportion equation
1,297,318,452.39 : 1,790,290,591.79 = 702,589,259.07 : x - Step 2: Convert to fraction form
1,297,318,452.39/1,790,290,591.79 = 702,589,259.07/x - Step 3: Cross multiply
1,297,318,452.39x = 1,790,290,591.79 × 702,589,259.07 - Step 4: Simplify right side
1,297,318,452.39x = 1,257,838,940,402,215,168 - Step 5: Solve for x
x = 1,257,838,940,402,215,168/1,297,318,452.39 - Step 6: Final answer
x = 969,568,372.43
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1.5x scale
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.