Finding the Fourth Proportional to 579,808.97, 800,142.99 and 321,690.68
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Solution
The fourth proportional to 579,808.97, 800,142.99 and 321,690.68 is: 443,936.81
Step by Step Solution
- Step 1: Write the proportion equation
579,808.97 : 800,142.99 = 321,690.68 : x - Step 2: Convert to fraction form
579,808.97/800,142.99 = 321,690.68/x - Step 3: Cross multiply
579,808.97x = 800,142.99 × 321,690.68 - Step 4: Simplify right side
579,808.97x = 257,398,542,550.33 - Step 5: Solve for x
x = 257,398,542,550.33/579,808.97 - Step 6: Final answer
x = 443,936.81
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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.