Finding the Fourth Proportional to 991,091.19, 1,367,380.54 and 555,444.84
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Solution
The fourth proportional to 991,091.19, 1,367,380.54 and 555,444.84 is: 766,331.57
Step by Step Solution
- Step 1: Write the proportion equation
991,091.19 : 1,367,380.54 = 555,444.84 : x - Step 2: Convert to fraction form
991,091.19/1,367,380.54 = 555,444.84/x - Step 3: Cross multiply
991,091.19x = 1,367,380.54 × 555,444.84 - Step 4: Simplify right side
991,091.19x = 759,504,471,081.40 - Step 5: Solve for x
x = 759,504,471,081.40/991,091.19 - Step 6: Final answer
x = 766,331.57
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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.