Finding the Fourth Proportional to 686,324.13, 947,183.99 and 380,496.43
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Solution
The fourth proportional to 686,324.13, 947,183.99 and 380,496.43 is: 525,116.50
Step by Step Solution
- Step 1: Write the proportion equation
686,324.13 : 947,183.99 = 380,496.43 : x - Step 2: Convert to fraction form
686,324.13/947,183.99 = 380,496.43/x - Step 3: Cross multiply
686,324.13x = 947,183.99 × 380,496.43 - Step 4: Simplify right side
686,324.13x = 360,400,124,845.67 - Step 5: Solve for x
x = 360,400,124,845.67/686,324.13 - Step 6: Final answer
x = 525,116.50
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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.