Finding the Fourth Proportional to 811,845.62, 1,120,319.37 and 449,284.76
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Solution
The fourth proportional to 811,845.62, 1,120,319.37 and 449,284.76 is: 619,997.70
Step by Step Solution
- Step 1: Write the proportion equation
811,845.62 : 1,120,319.37 = 449,284.76 : x - Step 2: Convert to fraction form
811,845.62/1,120,319.37 = 449,284.76/x - Step 3: Cross multiply
811,845.62x = 1,120,319.37 × 449,284.76 - Step 4: Simplify right side
811,845.62x = 503,342,414,226.58 - Step 5: Solve for x
x = 503,342,414,226.58/811,845.62 - Step 6: Final answer
x = 619,997.70
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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.