Finding the Fourth Proportional to 991,390.08, 1,368,550.44 and 629,370.48
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Solution
The fourth proportional to 991,390.08, 1,368,550.44 and 629,370.48 is: 868,805.59
Step by Step Solution
- Step 1: Write the proportion equation
991,390.08 : 1,368,550.44 = 629,370.48 : x - Step 2: Convert to fraction form
991,390.08/1,368,550.44 = 629,370.48/x - Step 3: Cross multiply
991,390.08x = 1,368,550.44 × 629,370.48 - Step 4: Simplify right side
991,390.08x = 861,325,247,327.01 - Step 5: Solve for x
x = 861,325,247,327.01/991,390.08 - Step 6: Final answer
x = 868,805.59
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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.