Finding the Fourth Proportional to 561,138.38, 774,370.96 and 306,490.17
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Solution
The fourth proportional to 561,138.38, 774,370.96 and 306,490.17 is: 422,956.43
Step by Step Solution
- Step 1: Write the proportion equation
561,138.38 : 774,370.96 = 306,490.17 : x - Step 2: Convert to fraction form
561,138.38/774,370.96 = 306,490.17/x - Step 3: Cross multiply
561,138.38x = 774,370.96 × 306,490.17 - Step 4: Simplify right side
561,138.38x = 237,337,086,407.24 - Step 5: Solve for x
x = 237,337,086,407.24/561,138.38 - Step 6: Final answer
x = 422,956.43
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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.