Finding the Fourth Proportional to 557,789.69, 769,755.75 and 303,140.99
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Solution
The fourth proportional to 557,789.69, 769,755.75 and 303,140.99 is: 418,337.81
Step by Step Solution
- Step 1: Write the proportion equation
557,789.69 : 769,755.75 = 303,140.99 : x - Step 2: Convert to fraction form
557,789.69/769,755.75 = 303,140.99/x - Step 3: Cross multiply
557,789.69x = 769,755.75 × 303,140.99 - Step 4: Simplify right side
557,789.69x = 233,344,520,113.19 - Step 5: Solve for x
x = 233,344,520,113.19/557,789.69 - Step 6: Final answer
x = 418,337.81
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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.