Finding the Fourth Proportional to 561,709.19, 775,163.84 and 319,988.18
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Solution
The fourth proportional to 561,709.19, 775,163.84 and 319,988.18 is: 441,586.62
Step by Step Solution
- Step 1: Write the proportion equation
561,709.19 : 775,163.84 = 319,988.18 : x - Step 2: Convert to fraction form
561,709.19/775,163.84 = 319,988.18/x - Step 3: Cross multiply
561,709.19x = 775,163.84 × 319,988.18 - Step 4: Simplify right side
561,709.19x = 248,043,260,887.65 - Step 5: Solve for x
x = 248,043,260,887.65/561,709.19 - Step 6: Final answer
x = 441,586.62
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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.