Finding the Fourth Proportional to 612,108.80, 918,163.20 and 413,043.20
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Solution
The fourth proportional to 612,108.80, 918,163.20 and 413,043.20 is: 619,564.80
Step by Step Solution
- Step 1: Write the proportion equation
612,108.80 : 918,163.20 = 413,043.20 : x - Step 2: Convert to fraction form
612,108.80/918,163.20 = 413,043.20/x - Step 3: Cross multiply
612,108.80x = 918,163.20 × 413,043.20 - Step 4: Simplify right side
612,108.80x = 379,241,066,250.24 - Step 5: Solve for x
x = 379,241,066,250.24/612,108.80 - Step 6: Final answer
x = 619,564.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.