Finding the Fourth Proportional to 1,320,202,489.96, 1,821,482,136.40 and 791,373,522.44
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Solution
The fourth proportional to 1,320,202,489.96, 1,821,482,136.40 and 791,373,522.44 is: 1,091,857,306.21
Step by Step Solution
- Step 1: Write the proportion equation
1,320,202,489.96 : 1,821,482,136.40 = 791,373,522.44 : x - Step 2: Convert to fraction form
1,320,202,489.96/1,821,482,136.40 = 791,373,522.44/x - Step 3: Cross multiply
1,320,202,489.96x = 1,821,482,136.40 × 791,373,522.44 - Step 4: Simplify right side
1,320,202,489.96x = 1,441,472,734,344,404,736 - Step 5: Solve for x
x = 1,441,472,734,344,404,736/1,320,202,489.96 - Step 6: Final answer
x = 1,091,857,306.21
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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.