Finding the Fourth Proportional to 2,128,329.18, 2,937,190.05 and 1,198,357.25
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Solution
The fourth proportional to 2,128,329.18, 2,937,190.05 and 1,198,357.25 is: 1,653,786.93
Step by Step Solution
- Step 1: Write the proportion equation
2,128,329.18 : 2,937,190.05 = 1,198,357.25 : x - Step 2: Convert to fraction form
2,128,329.18/2,937,190.05 = 1,198,357.25/x - Step 3: Cross multiply
2,128,329.18x = 2,937,190.05 × 1,198,357.25 - Step 4: Simplify right side
2,128,329.18x = 3,519,802,976,359.41 - Step 5: Solve for x
x = 3,519,802,976,359.41/2,128,329.18 - Step 6: Final answer
x = 1,653,786.93
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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.