Finding the Fourth Proportional to 1,329,629.84, 1,835,033.64 and 820,319.12
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Solution
The fourth proportional to 1,329,629.84, 1,835,033.64 and 820,319.12 is: 1,132,129.51
Step by Step Solution
- Step 1: Write the proportion equation
1,329,629.84 : 1,835,033.64 = 820,319.12 : x - Step 2: Convert to fraction form
1,329,629.84/1,835,033.64 = 820,319.12/x - Step 3: Cross multiply
1,329,629.84x = 1,835,033.64 × 820,319.12 - Step 4: Simplify right side
1,329,629.84x = 1,505,313,180,735.20 - Step 5: Solve for x
x = 1,505,313,180,735.20/1,329,629.84 - Step 6: Final answer
x = 1,132,129.51
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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.