Finding the Fourth Proportional to 665,325.66, 918,158.18 and 378,846.88
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Solution
The fourth proportional to 665,325.66, 918,158.18 and 378,846.88 is: 522,813.69
Step by Step Solution
- Step 1: Write the proportion equation
665,325.66 : 918,158.18 = 378,846.88 : x - Step 2: Convert to fraction form
665,325.66/918,158.18 = 378,846.88/x - Step 3: Cross multiply
665,325.66x = 918,158.18 × 378,846.88 - Step 4: Simplify right side
665,325.66x = 347,841,361,839.48 - Step 5: Solve for x
x = 347,841,361,839.48/665,325.66 - Step 6: Final answer
x = 522,813.69
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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.