Finding the Fourth Proportional to 691,670.56, 954,578.76 and 405,431.14
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Solution
The fourth proportional to 691,670.56, 954,578.76 and 405,431.14 is: 559,537.99
Step by Step Solution
- Step 1: Write the proportion equation
691,670.56 : 954,578.76 = 405,431.14 : x - Step 2: Convert to fraction form
691,670.56/954,578.76 = 405,431.14/x - Step 3: Cross multiply
691,670.56x = 954,578.76 × 405,431.14 - Step 4: Simplify right side
691,670.56x = 387,015,954,886.59 - Step 5: Solve for x
x = 387,015,954,886.59/691,670.56 - Step 6: Final answer
x = 559,537.99
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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.