Finding the Fourth Proportional to 1,218,962.88, 1,682,122.32 and 667,669.80
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Solution
The fourth proportional to 1,218,962.88, 1,682,122.32 and 667,669.80 is: 921,358.88
Step by Step Solution
- Step 1: Write the proportion equation
1,218,962.88 : 1,682,122.32 = 667,669.80 : x - Step 2: Convert to fraction form
1,218,962.88/1,682,122.32 = 667,669.80/x - Step 3: Cross multiply
1,218,962.88x = 1,682,122.32 × 667,669.80 - Step 4: Simplify right side
1,218,962.88x = 1,123,102,272,969.94 - Step 5: Solve for x
x = 1,123,102,272,969.94/1,218,962.88 - Step 6: Final answer
x = 921,358.88
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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.