Finding the Fourth Proportional to 715,991.21, 987,821.99 and 443,961.22
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Solution
The fourth proportional to 715,991.21, 987,821.99 and 443,961.22 is: 612,514.02
Step by Step Solution
- Step 1: Write the proportion equation
715,991.21 : 987,821.99 = 443,961.22 : x - Step 2: Convert to fraction form
715,991.21/987,821.99 = 443,961.22/x - Step 3: Cross multiply
715,991.21x = 987,821.99 × 443,961.22 - Step 4: Simplify right side
715,991.21x = 438,554,655,823.23 - Step 5: Solve for x
x = 438,554,655,823.23/715,991.21 - Step 6: Final answer
x = 612,514.02
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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.