Finding the Fourth Proportional to 398,880.20, 598,646.70 and 395,769.80
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Solution
The fourth proportional to 398,880.20, 598,646.70 and 395,769.80 is: 593,978.55
Step by Step Solution
- Step 1: Write the proportion equation
398,880.20 : 598,646.70 = 395,769.80 : x - Step 2: Convert to fraction form
398,880.20/598,646.70 = 395,769.80/x - Step 3: Cross multiply
398,880.20x = 598,646.70 × 395,769.80 - Step 4: Simplify right side
398,880.20x = 236,926,284,729.66 - Step 5: Solve for x
x = 236,926,284,729.66/398,880.20 - Step 6: Final answer
x = 593,978.55
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.