Finding the Fourth Proportional to 727,415.70, 1,091,123.55 and 221,975.70
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Solution
The fourth proportional to 727,415.70, 1,091,123.55 and 221,975.70 is: 332,963.55
Step by Step Solution
- Step 1: Write the proportion equation
727,415.70 : 1,091,123.55 = 221,975.70 : x - Step 2: Convert to fraction form
727,415.70/1,091,123.55 = 221,975.70/x - Step 3: Cross multiply
727,415.70x = 1,091,123.55 × 221,975.70 - Step 4: Simplify right side
727,415.70x = 242,202,913,797.74 - Step 5: Solve for x
x = 242,202,913,797.74/727,415.70 - Step 6: Final answer
x = 332,963.55
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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.