Finding the Fourth Proportional to 557,138.38, 768,850.94 and 302,489.60
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Solution
The fourth proportional to 557,138.38, 768,850.94 and 302,489.60 is: 417,435.63
Step by Step Solution
- Step 1: Write the proportion equation
557,138.38 : 768,850.94 = 302,489.60 : x - Step 2: Convert to fraction form
557,138.38/768,850.94 = 302,489.60/x - Step 3: Cross multiply
557,138.38x = 768,850.94 × 302,489.60 - Step 4: Simplify right side
557,138.38x = 232,569,413,300.22 - Step 5: Solve for x
x = 232,569,413,300.22/557,138.38 - Step 6: Final answer
x = 417,435.63
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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.