Finding the Fourth Proportional to 393,861.64, 589,392.78 and 288,419.08
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Solution
The fourth proportional to 393,861.64, 589,392.78 and 288,419.08 is: 431,603.65
Step by Step Solution
- Step 1: Write the proportion equation
393,861.64 : 589,392.78 = 288,419.08 : x - Step 2: Convert to fraction form
393,861.64/589,392.78 = 288,419.08/x - Step 3: Cross multiply
393,861.64x = 589,392.78 × 288,419.08 - Step 4: Simplify right side
393,861.64x = 169,992,123,366.24 - Step 5: Solve for x
x = 169,992,123,366.24/393,861.64 - Step 6: Final answer
x = 431,603.65
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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.