Finding the Fourth Proportional to 739,012.74, 1,019,837.87 and 399,480.99
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Solution
The fourth proportional to 739,012.74, 1,019,837.87 and 399,480.99 is: 551,283.92
Step by Step Solution
- Step 1: Write the proportion equation
739,012.74 : 1,019,837.87 = 399,480.99 : x - Step 2: Convert to fraction form
739,012.74/1,019,837.87 = 399,480.99/x - Step 3: Cross multiply
739,012.74x = 1,019,837.87 × 399,480.99 - Step 4: Simplify right side
739,012.74x = 407,405,839,368.10 - Step 5: Solve for x
x = 407,405,839,368.10/739,012.74 - Step 6: Final answer
x = 551,283.92
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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.