Finding the Fourth Proportional to 811,689.96, 1,120,582.62 and 489,481.68
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Solution
The fourth proportional to 811,689.96, 1,120,582.62 and 489,481.68 is: 675,756.37
Step by Step Solution
- Step 1: Write the proportion equation
811,689.96 : 1,120,582.62 = 489,481.68 : x - Step 2: Convert to fraction form
811,689.96/1,120,582.62 = 489,481.68/x - Step 3: Cross multiply
811,689.96x = 1,120,582.62 × 489,481.68 - Step 4: Simplify right side
811,689.96x = 548,504,663,416.40 - Step 5: Solve for x
x = 548,504,663,416.40/811,689.96 - Step 6: Final answer
x = 675,756.37
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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.