Finding the Fourth Proportional to 811,902, 1,217,858.04 and 212,857.78
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Solution
The fourth proportional to 811,902, 1,217,858.04 and 212,857.78 is: 319,287.99
Step by Step Solution
- Step 1: Write the proportion equation
811,902 : 1,217,858.04 = 212,857.78 : x - Step 2: Convert to fraction form
811,902/1,217,858.04 = 212,857.78/x - Step 3: Cross multiply
811,902x = 1,217,858.04 × 212,857.78 - Step 4: Simplify right side
811,902x = 259,230,558,749.55 - Step 5: Solve for x
x = 259,230,558,749.55/811,902 - Step 6: Final answer
x = 319,287.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.