Finding the Fourth Proportional to 1,125,939.02, 1,553,906.78 and 642,576.92
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Solution
The fourth proportional to 1,125,939.02, 1,553,906.78 and 642,576.92 is: 886,819.45
Step by Step Solution
- Step 1: Write the proportion equation
1,125,939.02 : 1,553,906.78 = 642,576.92 : x - Step 2: Convert to fraction form
1,125,939.02/1,553,906.78 = 642,576.92/x - Step 3: Cross multiply
1,125,939.02x = 1,553,906.78 × 642,576.92 - Step 4: Simplify right side
1,125,939.02x = 998,504,621,677.10 - Step 5: Solve for x
x = 998,504,621,677.10/1,125,939.02 - Step 6: Final answer
x = 886,819.45
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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.