Finding the Fourth Proportional to 811,747.84, 1,120,213.36 and 449,186.96
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Solution
The fourth proportional to 811,747.84, 1,120,213.36 and 449,186.96 is: 619,878.75
Step by Step Solution
- Step 1: Write the proportion equation
811,747.84 : 1,120,213.36 = 449,186.96 : x - Step 2: Convert to fraction form
811,747.84/1,120,213.36 = 449,186.96/x - Step 3: Cross multiply
811,747.84x = 1,120,213.36 × 449,186.96 - Step 4: Simplify right side
811,747.84x = 503,185,233,729.79 - Step 5: Solve for x
x = 503,185,233,729.79/811,747.84 - Step 6: Final answer
x = 619,878.75
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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.