Finding the Fourth Proportional to 790,782.05, 1,091,284.47 and 428,205.91
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Solution
The fourth proportional to 790,782.05, 1,091,284.47 and 428,205.91 is: 590,926.99
Step by Step Solution
- Step 1: Write the proportion equation
790,782.05 : 1,091,284.47 = 428,205.91 : x - Step 2: Convert to fraction form
790,782.05/1,091,284.47 = 428,205.91/x - Step 3: Cross multiply
790,782.05x = 1,091,284.47 × 428,205.91 - Step 4: Simplify right side
790,782.05x = 467,294,456,817.01 - Step 5: Solve for x
x = 467,294,456,817.01/790,782.05 - Step 6: Final answer
x = 590,926.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.