Finding the Fourth Proportional to 1,021,586.11, 1,409,956.99 and 779,411.09
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Solution
The fourth proportional to 1,021,586.11, 1,409,956.99 and 779,411.09 is: 1,075,715.60
Step by Step Solution
- Step 1: Write the proportion equation
1,021,586.11 : 1,409,956.99 = 779,411.09 : x - Step 2: Convert to fraction form
1,021,586.11/1,409,956.99 = 779,411.09/x - Step 3: Cross multiply
1,021,586.11x = 1,409,956.99 × 779,411.09 - Step 4: Simplify right side
1,021,586.11x = 1,098,936,116,005.38 - Step 5: Solve for x
x = 1,098,936,116,005.38/1,021,586.11 - Step 6: Final answer
x = 1,075,715.60
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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.