Finding the Fourth Proportional to 811,691.96, 1,120,585.38 and 489,483.68
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Solution
The fourth proportional to 811,691.96, 1,120,585.38 and 489,483.68 is: 675,759.13
Step by Step Solution
- Step 1: Write the proportion equation
811,691.96 : 1,120,585.38 = 489,483.68 : x - Step 2: Convert to fraction form
811,691.96/1,120,585.38 = 489,483.68/x - Step 3: Cross multiply
811,691.96x = 1,120,585.38 × 489,483.68 - Step 4: Simplify right side
811,691.96x = 548,508,255,556.60 - Step 5: Solve for x
x = 548,508,255,556.60/811,691.96 - Step 6: Final answer
x = 675,759.13
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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.