Finding the Fourth Proportional to 665,651.81, 918,375.08 and 378,968.91
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Solution
The fourth proportional to 665,651.81, 918,375.08 and 378,968.91 is: 522,849.33
Step by Step Solution
- Step 1: Write the proportion equation
665,651.81 : 918,375.08 = 378,968.91 : x - Step 2: Convert to fraction form
665,651.81/918,375.08 = 378,968.91/x - Step 3: Cross multiply
665,651.81x = 918,375.08 × 378,968.91 - Step 4: Simplify right side
665,651.81x = 348,035,601,143.92 - Step 5: Solve for x
x = 348,035,601,143.92/665,651.81 - Step 6: Final answer
x = 522,849.33
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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.