Finding the Fourth Proportional to 665,540.12, 918,424.86 and 379,101.08
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Solution
The fourth proportional to 665,540.12, 918,424.86 and 379,101.08 is: 523,147.81
Step by Step Solution
- Step 1: Write the proportion equation
665,540.12 : 918,424.86 = 379,101.08 : x - Step 2: Convert to fraction form
665,540.12/918,424.86 = 379,101.08/x - Step 3: Cross multiply
665,540.12x = 918,424.86 × 379,101.08 - Step 4: Simplify right side
665,540.12x = 348,175,856,324.85 - Step 5: Solve for x
x = 348,175,856,324.85/665,540.12 - Step 6: Final answer
x = 523,147.81
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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.