Finding the Fourth Proportional to 1,391,735.74, 1,920,562.68 and 818,812.78
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Solution
The fourth proportional to 1,391,735.74, 1,920,562.68 and 818,812.78 is: 1,129,942.43
Step by Step Solution
- Step 1: Write the proportion equation
1,391,735.74 : 1,920,562.68 = 818,812.78 : x - Step 2: Convert to fraction form
1,391,735.74/1,920,562.68 = 818,812.78/x - Step 3: Cross multiply
1,391,735.74x = 1,920,562.68 × 818,812.78 - Step 4: Simplify right side
1,391,735.74x = 1,572,581,267,175.05 - Step 5: Solve for x
x = 1,572,581,267,175.05/1,391,735.74 - Step 6: Final answer
x = 1,129,942.43
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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.