Finding the Fourth Proportional to 686,153.16, 946,896.96 and 380,234.70
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Solution
The fourth proportional to 686,153.16, 946,896.96 and 380,234.70 is: 524,726.99
Step by Step Solution
- Step 1: Write the proportion equation
686,153.16 : 946,896.96 = 380,234.70 : x - Step 2: Convert to fraction form
686,153.16/946,896.96 = 380,234.70/x - Step 3: Cross multiply
686,153.16x = 946,896.96 × 380,234.70 - Step 4: Simplify right side
686,153.16x = 360,043,081,516.51 - Step 5: Solve for x
x = 360,043,081,516.51/686,153.16 - Step 6: Final answer
x = 524,726.99
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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.