Finding the Fourth Proportional to 665,344.41, 918,174.39 and 378,864.50
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Solution
The fourth proportional to 665,344.41, 918,174.39 and 378,864.50 is: 522,832.49
Step by Step Solution
- Step 1: Write the proportion equation
665,344.41 : 918,174.39 = 378,864.50 : x - Step 2: Convert to fraction form
665,344.41/918,174.39 = 378,864.50/x - Step 3: Cross multiply
665,344.41x = 918,174.39 × 378,864.50 - Step 4: Simplify right side
665,344.41x = 347,863,677,750.91 - Step 5: Solve for x
x = 347,863,677,750.91/665,344.41 - Step 6: Final answer
x = 522,832.49
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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.