Finding the Fourth Proportional to 812,447.57, 1,121,163.95 and 449,863.62
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Solution
The fourth proportional to 812,447.57, 1,121,163.95 and 449,863.62 is: 620,804.21
Step by Step Solution
- Step 1: Write the proportion equation
812,447.57 : 1,121,163.95 = 449,863.62 : x - Step 2: Convert to fraction form
812,447.57/1,121,163.95 = 449,863.62/x - Step 3: Cross multiply
812,447.57x = 1,121,163.95 × 449,863.62 - Step 4: Simplify right side
812,447.57x = 504,370,870,911.18 - Step 5: Solve for x
x = 504,370,870,911.18/812,447.57 - Step 6: Final answer
x = 620,804.21
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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.