Finding the Fourth Proportional to 492,781.20, 739,171.80 and 393,136.02
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Solution
The fourth proportional to 492,781.20, 739,171.80 and 393,136.02 is: 589,704.03
Step by Step Solution
- Step 1: Write the proportion equation
492,781.20 : 739,171.80 = 393,136.02 : x - Step 2: Convert to fraction form
492,781.20/739,171.80 = 393,136.02/x - Step 3: Cross multiply
492,781.20x = 739,171.80 × 393,136.02 - Step 4: Simplify right side
492,781.20x = 290,595,059,548.24 - Step 5: Solve for x
x = 290,595,059,548.24/492,781.20 - Step 6: Final answer
x = 589,704.03
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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.