Finding the Fourth Proportional to 638,173.16, 880,697.42 and 351,711.70
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Solution
The fourth proportional to 638,173.16, 880,697.42 and 351,711.70 is: 485,372.32
Step by Step Solution
- Step 1: Write the proportion equation
638,173.16 : 880,697.42 = 351,711.70 : x - Step 2: Convert to fraction form
638,173.16/880,697.42 = 351,711.70/x - Step 3: Cross multiply
638,173.16x = 880,697.42 × 351,711.70 - Step 4: Simplify right side
638,173.16x = 309,751,585,015.26 - Step 5: Solve for x
x = 309,751,585,015.26/638,173.16 - Step 6: Final answer
x = 485,372.32
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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.