Finding the Fourth Proportional to 1,098,438.05, 1,647,920.12 and 458,385.74
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Solution
The fourth proportional to 1,098,438.05, 1,647,920.12 and 458,385.74 is: 687,688.37
Step by Step Solution
- Step 1: Write the proportion equation
1,098,438.05 : 1,647,920.12 = 458,385.74 : x - Step 2: Convert to fraction form
1,098,438.05/1,647,920.12 = 458,385.74/x - Step 3: Cross multiply
1,098,438.05x = 1,647,920.12 × 458,385.74 - Step 4: Simplify right side
1,098,438.05x = 755,383,073,135.56 - Step 5: Solve for x
x = 755,383,073,135.56/1,098,438.05 - Step 6: Final answer
x = 687,688.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.