Finding the Fourth Proportional to 820,316.99, 1,230,598.49 and 287,744.22
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Solution
The fourth proportional to 820,316.99, 1,230,598.49 and 287,744.22 is: 431,659.48
Step by Step Solution
- Step 1: Write the proportion equation
820,316.99 : 1,230,598.49 = 287,744.22 : x - Step 2: Convert to fraction form
820,316.99/1,230,598.49 = 287,744.22/x - Step 3: Cross multiply
820,316.99x = 1,230,598.49 × 287,744.22 - Step 4: Simplify right side
820,316.99x = 354,097,601,199.51 - Step 5: Solve for x
x = 354,097,601,199.51/820,316.99 - Step 6: Final answer
x = 431,659.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.