Finding the Fourth Proportional to 689,738.67, 1,034,651.74 and 216,442.71
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Solution
The fourth proportional to 689,738.67, 1,034,651.74 and 216,442.71 is: 324,677.79
Step by Step Solution
- Step 1: Write the proportion equation
689,738.67 : 1,034,651.74 = 216,442.71 : x - Step 2: Convert to fraction form
689,738.67/1,034,651.74 = 216,442.71/x - Step 3: Cross multiply
689,738.67x = 1,034,651.74 × 216,442.71 - Step 4: Simplify right side
689,738.67x = 223,942,826,511.82 - Step 5: Solve for x
x = 223,942,826,511.82/689,738.67 - Step 6: Final answer
x = 324,677.79
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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.