Finding the Fourth Proportional to 718,395.18, 991,625.58 and 428,097.82
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Solution
The fourth proportional to 718,395.18, 991,625.58 and 428,097.82 is: 590,918.15
Step by Step Solution
- Step 1: Write the proportion equation
718,395.18 : 991,625.58 = 428,097.82 : x - Step 2: Convert to fraction form
718,395.18/991,625.58 = 428,097.82/x - Step 3: Cross multiply
718,395.18x = 991,625.58 × 428,097.82 - Step 4: Simplify right side
718,395.18x = 424,512,749,054.24 - Step 5: Solve for x
x = 424,512,749,054.24/718,395.18 - Step 6: Final answer
x = 590,918.15
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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.