Finding the Fourth Proportional to 811,896.98, 1,120,419.99 and 449,345.84
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Solution
The fourth proportional to 811,896.98, 1,120,419.99 and 449,345.84 is: 620,098.45
Step by Step Solution
- Step 1: Write the proportion equation
811,896.98 : 1,120,419.99 = 449,345.84 : x - Step 2: Convert to fraction form
811,896.98/1,120,419.99 = 449,345.84/x - Step 3: Cross multiply
811,896.98x = 1,120,419.99 × 449,345.84 - Step 4: Simplify right side
811,896.98x = 503,456,061,559.34 - Step 5: Solve for x
x = 503,456,061,559.34/811,896.98 - Step 6: Final answer
x = 620,098.45
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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.