Finding the Fourth Proportional to 665,704.09, 918,621.97 and 379,168.21
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Solution
The fourth proportional to 665,704.09, 918,621.97 and 379,168.21 is: 523,223.84
Step by Step Solution
- Step 1: Write the proportion equation
665,704.09 : 918,621.97 = 379,168.21 : x - Step 2: Convert to fraction form
665,704.09/918,621.97 = 379,168.21/x - Step 3: Cross multiply
665,704.09x = 918,621.97 × 379,168.21 - Step 4: Simplify right side
665,704.09x = 348,312,248,031.57 - Step 5: Solve for x
x = 348,312,248,031.57/665,704.09 - Step 6: Final answer
x = 523,223.84
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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.