Finding the Fourth Proportional to 682,938.70, 1,024,408.05 and 647,946.70
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Solution
The fourth proportional to 682,938.70, 1,024,408.05 and 647,946.70 is: 971,920.05
Step by Step Solution
- Step 1: Write the proportion equation
682,938.70 : 1,024,408.05 = 647,946.70 : x - Step 2: Convert to fraction form
682,938.70/1,024,408.05 = 647,946.70/x - Step 3: Cross multiply
682,938.70x = 1,024,408.05 × 647,946.70 - Step 4: Simplify right side
682,938.70x = 663,761,815,450.94 - Step 5: Solve for x
x = 663,761,815,450.94/682,938.70 - Step 6: Final answer
x = 971,920.05
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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.