Finding the Fourth Proportional to 718,145.09, 991,039.98 and 395,860.57
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Solution
The fourth proportional to 718,145.09, 991,039.98 and 395,860.57 is: 546,287.45
Step by Step Solution
- Step 1: Write the proportion equation
718,145.09 : 991,039.98 = 395,860.57 : x - Step 2: Convert to fraction form
718,145.09/991,039.98 = 395,860.57/x - Step 3: Cross multiply
718,145.09x = 991,039.98 × 395,860.57 - Step 4: Simplify right side
718,145.09x = 392,313,651,375.59 - Step 5: Solve for x
x = 392,313,651,375.59/718,145.09 - Step 6: Final answer
x = 546,287.45
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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.