Finding the Fourth Proportional to 665,676.20, 918,525.70 and 379,201.80
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Solution
The fourth proportional to 665,676.20, 918,525.70 and 379,201.80 is: 523,237.27
Step by Step Solution
- Step 1: Write the proportion equation
665,676.20 : 918,525.70 = 379,201.80 : x - Step 2: Convert to fraction form
665,676.20/918,525.70 = 379,201.80/x - Step 3: Cross multiply
665,676.20x = 918,525.70 × 379,201.80 - Step 4: Simplify right side
665,676.20x = 348,306,598,786.26 - Step 5: Solve for x
x = 348,306,598,786.26/665,676.20 - Step 6: Final answer
x = 523,237.27
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1.5x scale
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.