Finding the Fourth Proportional to 813,213.68, 1,122,241.53 and 450,643.60
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Solution
The fourth proportional to 813,213.68, 1,122,241.53 and 450,643.60 is: 621,891.85
Step by Step Solution
- Step 1: Write the proportion equation
813,213.68 : 1,122,241.53 = 450,643.60 : x - Step 2: Convert to fraction form
813,213.68/1,122,241.53 = 450,643.60/x - Step 3: Cross multiply
813,213.68x = 1,122,241.53 × 450,643.60 - Step 4: Simplify right side
813,213.68x = 505,730,958,653.19 - Step 5: Solve for x
x = 505,730,958,653.19/813,213.68 - Step 6: Final answer
x = 621,891.85
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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.