Finding the Fourth Proportional to 521,201.20, 781,364.40 and 271,883.20
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Solution
The fourth proportional to 521,201.20, 781,364.40 and 271,883.20 is: 407,596.63
Step by Step Solution
- Step 1: Write the proportion equation
521,201.20 : 781,364.40 = 271,883.20 : x - Step 2: Convert to fraction form
521,201.20/781,364.40 = 271,883.20/x - Step 3: Cross multiply
521,201.20x = 781,364.40 × 271,883.20 - Step 4: Simplify right side
521,201.20x = 212,439,853,438.08 - Step 5: Solve for x
x = 212,439,853,438.08/521,201.20 - Step 6: Final answer
x = 407,596.63
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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.