Finding the Fourth Proportional to 665,480.57, 918,806.63 and 393,635.79
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Solution
The fourth proportional to 665,480.57, 918,806.63 and 393,635.79 is: 543,479.69
Step by Step Solution
- Step 1: Write the proportion equation
665,480.57 : 918,806.63 = 393,635.79 : x - Step 2: Convert to fraction form
665,480.57/918,806.63 = 393,635.79/x - Step 3: Cross multiply
665,480.57x = 918,806.63 × 393,635.79 - Step 4: Simplify right side
665,480.57x = 361,675,171,689.11 - Step 5: Solve for x
x = 361,675,171,689.11/665,480.57 - Step 6: Final answer
x = 543,479.69
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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.