Finding the Fourth Proportional to 665,684.12, 918,537.90 and 379,209.80
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Solution
The fourth proportional to 665,684.12, 918,537.90 and 379,209.80 is: 523,249.03
Step by Step Solution
- Step 1: Write the proportion equation
665,684.12 : 918,537.90 = 379,209.80 : x - Step 2: Convert to fraction form
665,684.12/918,537.90 = 379,209.80/x - Step 3: Cross multiply
665,684.12x = 918,537.90 × 379,209.80 - Step 4: Simplify right side
665,684.12x = 348,318,573,351.42 - Step 5: Solve for x
x = 348,318,573,351.42/665,684.12 - Step 6: Final answer
x = 523,249.03
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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.