Finding the Fourth Proportional to 413,729.20, 620,593.80 and 203,777.20
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Solution
The fourth proportional to 413,729.20, 620,593.80 and 203,777.20 is: 305,665.80
Step by Step Solution
- Step 1: Write the proportion equation
413,729.20 : 620,593.80 = 203,777.20 : x - Step 2: Convert to fraction form
413,729.20/620,593.80 = 203,777.20/x - Step 3: Cross multiply
413,729.20x = 620,593.80 × 203,777.20 - Step 4: Simplify right side
413,729.20x = 126,462,866,901.36 - Step 5: Solve for x
x = 126,462,866,901.36/413,729.20 - Step 6: Final answer
x = 305,665.80
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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.