Finding the Fourth Proportional to 691,912.53, 954,934.11 and 405,546.75
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Solution
The fourth proportional to 691,912.53, 954,934.11 and 405,546.75 is: 559,710.09
Step by Step Solution
- Step 1: Write the proportion equation
691,912.53 : 954,934.11 = 405,546.75 : x - Step 2: Convert to fraction form
691,912.53/954,934.11 = 405,546.75/x - Step 3: Cross multiply
691,912.53x = 954,934.11 × 405,546.75 - Step 4: Simplify right side
691,912.53x = 387,270,424,774.64 - Step 5: Solve for x
x = 387,270,424,774.64/691,912.53 - Step 6: Final answer
x = 559,710.09
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1.5x scale
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.