Finding the Fourth Proportional to 643,268.75, 887,129.84 and 401,573.66
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Solution
The fourth proportional to 643,268.75, 887,129.84 and 401,573.66 is: 553,808.92
Step by Step Solution
- Step 1: Write the proportion equation
643,268.75 : 887,129.84 = 401,573.66 : x - Step 2: Convert to fraction form
643,268.75/887,129.84 = 401,573.66/x - Step 3: Cross multiply
643,268.75x = 887,129.84 × 401,573.66 - Step 4: Simplify right side
643,268.75x = 356,247,974,736.15 - Step 5: Solve for x
x = 356,247,974,736.15/643,268.75 - Step 6: Final answer
x = 553,808.92
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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.