Finding the Fourth Proportional to 428,511.21, 642,674.55 and 175,543.66
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Solution
The fourth proportional to 428,511.21, 642,674.55 and 175,543.66 is: 263,277.69
Step by Step Solution
- Step 1: Write the proportion equation
428,511.21 : 642,674.55 = 175,543.66 : x - Step 2: Convert to fraction form
428,511.21/642,674.55 = 175,543.66/x - Step 3: Cross multiply
428,511.21x = 642,674.55 × 175,543.66 - Step 4: Simplify right side
428,511.21x = 112,817,440,542.44 - Step 5: Solve for x
x = 112,817,440,542.44/428,511.21 - Step 6: Final answer
x = 263,277.69
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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.