Finding the Fourth Proportional to 1,391,125.80, 2,086,688.70 and 682,537.80
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Solution
The fourth proportional to 1,391,125.80, 2,086,688.70 and 682,537.80 is: 1,023,806.70
Step by Step Solution
- Step 1: Write the proportion equation
1,391,125.80 : 2,086,688.70 = 682,537.80 : x - Step 2: Convert to fraction form
1,391,125.80/2,086,688.70 = 682,537.80/x - Step 3: Cross multiply
1,391,125.80x = 2,086,688.70 × 682,537.80 - Step 4: Simplify right side
1,391,125.80x = 1,424,243,914,582.86 - Step 5: Solve for x
x = 1,424,243,914,582.86/1,391,125.80 - Step 6: Final answer
x = 1,023,806.70
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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.