Finding the Fourth Proportional to 989,170.29, 1,365,145.74 and 621,707.22
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Solution
The fourth proportional to 989,170.29, 1,365,145.74 and 621,707.22 is: 858,012.99
Step by Step Solution
- Step 1: Write the proportion equation
989,170.29 : 1,365,145.74 = 621,707.22 : x - Step 2: Convert to fraction form
989,170.29/1,365,145.74 = 621,707.22/x - Step 3: Cross multiply
989,170.29x = 1,365,145.74 × 621,707.22 - Step 4: Simplify right side
989,170.29x = 848,720,962,910.24 - Step 5: Solve for x
x = 848,720,962,910.24/989,170.29 - Step 6: Final answer
x = 858,012.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.