Finding the Fourth Proportional to 811,939.49, 1,120,468.24 and 449,364.05
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Solution
The fourth proportional to 811,939.49, 1,120,468.24 and 449,364.05 is: 620,117.82
Step by Step Solution
- Step 1: Write the proportion equation
811,939.49 : 1,120,468.24 = 449,364.05 : x - Step 2: Convert to fraction form
811,939.49/1,120,468.24 = 449,364.05/x - Step 3: Cross multiply
811,939.49x = 1,120,468.24 × 449,364.05 - Step 4: Simplify right side
811,939.49x = 503,498,146,222.77 - Step 5: Solve for x
x = 503,498,146,222.77/811,939.49 - Step 6: Final answer
x = 620,117.82
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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.