Finding the Fourth Proportional to 790,617.70, 1,091,231.76 and 618,194.62
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Solution
The fourth proportional to 790,617.70, 1,091,231.76 and 618,194.62 is: 853,248.80
Step by Step Solution
- Step 1: Write the proportion equation
790,617.70 : 1,091,231.76 = 618,194.62 : x - Step 2: Convert to fraction form
790,617.70/1,091,231.76 = 618,194.62/x - Step 3: Cross multiply
790,617.70x = 1,091,231.76 × 618,194.62 - Step 4: Simplify right side
790,617.70x = 674,593,603,205.13 - Step 5: Solve for x
x = 674,593,603,205.13/790,617.70 - Step 6: Final answer
x = 853,248.80
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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.