Finding the Fourth Proportional to 405,955.99, 560,754.74 and 311,628.31
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Solution
The fourth proportional to 405,955.99, 560,754.74 and 311,628.31 is: 430,458.12
Step by Step Solution
- Step 1: Write the proportion equation
405,955.99 : 560,754.74 = 311,628.31 : x - Step 2: Convert to fraction form
405,955.99/560,754.74 = 311,628.31/x - Step 3: Cross multiply
405,955.99x = 560,754.74 × 311,628.31 - Step 4: Simplify right side
405,955.99x = 174,747,051,950.69 - Step 5: Solve for x
x = 174,747,051,950.69/405,955.99 - Step 6: Final answer
x = 430,458.12
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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.