Finding the Fourth Proportional to 718,756.88, 991,940.19 and 396,495.14
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Solution
The fourth proportional to 718,756.88, 991,940.19 and 396,495.14 is: 547,194.02
Step by Step Solution
- Step 1: Write the proportion equation
718,756.88 : 991,940.19 = 396,495.14 : x - Step 2: Convert to fraction form
718,756.88/991,940.19 = 396,495.14/x - Step 3: Cross multiply
718,756.88x = 991,940.19 × 396,495.14 - Step 4: Simplify right side
718,756.88x = 393,299,464,505.68 - Step 5: Solve for x
x = 393,299,464,505.68/718,756.88 - Step 6: Final answer
x = 547,194.02
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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.