Finding the Fourth Proportional to 538,828.36, 743,633.03 and 309,415.70
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Solution
The fourth proportional to 538,828.36, 743,633.03 and 309,415.70 is: 427,022.32
Step by Step Solution
- Step 1: Write the proportion equation
538,828.36 : 743,633.03 = 309,415.70 : x - Step 2: Convert to fraction form
538,828.36/743,633.03 = 309,415.70/x - Step 3: Cross multiply
538,828.36x = 743,633.03 × 309,415.70 - Step 4: Simplify right side
538,828.36x = 230,091,737,153.19 - Step 5: Solve for x
x = 230,091,737,153.19/538,828.36 - Step 6: Final answer
x = 427,022.32
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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.