Finding the Fourth Proportional to 7,873,821.12, 10,865,873.28 and 4,252,149.12
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Solution
The fourth proportional to 7,873,821.12, 10,865,873.28 and 4,252,149.12 is: 5,867,965.86
Step by Step Solution
- Step 1: Write the proportion equation
7,873,821.12 : 10,865,873.28 = 4,252,149.12 : x - Step 2: Convert to fraction form
7,873,821.12/10,865,873.28 = 4,252,149.12/x - Step 3: Cross multiply
7,873,821.12x = 10,865,873.28 × 4,252,149.12 - Step 4: Simplify right side
7,873,821.12x = 46,203,313,505,583.52 - Step 5: Solve for x
x = 46,203,313,505,583.52/7,873,821.12 - Step 6: Final answer
x = 5,867,965.86
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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.