Finding the Fourth Proportional to 665,329.16, 918,163.02 and 378,850.40
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Solution
The fourth proportional to 665,329.16, 918,163.02 and 378,850.40 is: 522,818.55
Step by Step Solution
- Step 1: Write the proportion equation
665,329.16 : 918,163.02 = 378,850.40 : x - Step 2: Convert to fraction form
665,329.16/918,163.02 = 378,850.40/x - Step 3: Cross multiply
665,329.16x = 918,163.02 × 378,850.40 - Step 4: Simplify right side
665,329.16x = 347,846,427,392.21 - Step 5: Solve for x
x = 347,846,427,392.21/665,329.16 - Step 6: Final answer
x = 522,818.55
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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.