Finding the Fourth Proportional to 447,583.05, 671,374.58 and 428,146.09
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Solution
The fourth proportional to 447,583.05, 671,374.58 and 428,146.09 is: 642,219.13
Step by Step Solution
- Step 1: Write the proportion equation
447,583.05 : 671,374.58 = 428,146.09 : x - Step 2: Convert to fraction form
447,583.05/671,374.58 = 428,146.09/x - Step 3: Cross multiply
447,583.05x = 671,374.58 × 428,146.09 - Step 4: Simplify right side
447,583.05x = 287,446,397,533.23 - Step 5: Solve for x
x = 287,446,397,533.23/447,583.05 - Step 6: Final answer
x = 642,219.13
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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.