Finding the Fourth Proportional to 686,205.21, 946,935.84 and 380,294.67
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Solution
The fourth proportional to 686,205.21, 946,935.84 and 380,294.67 is: 524,791.49
Step by Step Solution
- Step 1: Write the proportion equation
686,205.21 : 946,935.84 = 380,294.67 : x - Step 2: Convert to fraction form
686,205.21/946,935.84 = 380,294.67/x - Step 3: Cross multiply
686,205.21x = 946,935.84 × 380,294.67 - Step 4: Simplify right side
686,205.21x = 360,114,652,783.97 - Step 5: Solve for x
x = 360,114,652,783.97/686,205.21 - Step 6: Final answer
x = 524,791.49
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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.