Finding the Fourth Proportional to 811,849.12, 1,120,353.98 and 449,297.98
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Solution
The fourth proportional to 811,849.12, 1,120,353.98 and 449,297.98 is: 620,032.43
Step by Step Solution
- Step 1: Write the proportion equation
811,849.12 : 1,120,353.98 = 449,297.98 : x - Step 2: Convert to fraction form
811,849.12/1,120,353.98 = 449,297.98/x - Step 3: Cross multiply
811,849.12x = 1,120,353.98 × 449,297.98 - Step 4: Simplify right side
811,849.12x = 503,372,780,098.96 - Step 5: Solve for x
x = 503,372,780,098.96/811,849.12 - Step 6: Final answer
x = 620,032.43
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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.