Finding the Fourth Proportional to 1,106,991.68, 1,527,651.29 and 641,935.70
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Solution
The fourth proportional to 1,106,991.68, 1,527,651.29 and 641,935.70 is: 885,872.88
Step by Step Solution
- Step 1: Write the proportion equation
1,106,991.68 : 1,527,651.29 = 641,935.70 : x - Step 2: Convert to fraction form
1,106,991.68/1,527,651.29 = 641,935.70/x - Step 3: Cross multiply
1,106,991.68x = 1,527,651.29 × 641,935.70 - Step 4: Simplify right side
1,106,991.68x = 980,653,905,626.02 - Step 5: Solve for x
x = 980,653,905,626.02/1,106,991.68 - Step 6: Final answer
x = 885,872.88
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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.