Finding the Fourth Proportional to 722,189.87, 996,609.81 and 399,893.05
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Solution
The fourth proportional to 722,189.87, 996,609.81 and 399,893.05 is: 551,845.65
Step by Step Solution
- Step 1: Write the proportion equation
722,189.87 : 996,609.81 = 399,893.05 : x - Step 2: Convert to fraction form
722,189.87/996,609.81 = 399,893.05/x - Step 3: Cross multiply
722,189.87x = 996,609.81 × 399,893.05 - Step 4: Simplify right side
722,189.87x = 398,537,336,580.82 - Step 5: Solve for x
x = 398,537,336,580.82/722,189.87 - Step 6: Final answer
x = 551,845.65
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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.