Finding the Fourth Proportional to 19,251,786.75, 28,878,731.90 and 4,874,979.09
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Solution
The fourth proportional to 19,251,786.75, 28,878,731.90 and 4,874,979.09 is: 7,312,734.98
Step by Step Solution
- Step 1: Write the proportion equation
19,251,786.75 : 28,878,731.90 = 4,874,979.09 : x - Step 2: Convert to fraction form
19,251,786.75/28,878,731.90 = 4,874,979.09/x - Step 3: Cross multiply
19,251,786.75x = 28,878,731.90 × 4,874,979.09 - Step 4: Simplify right side
19,251,786.75x = 140,783,214,287,839.25 - Step 5: Solve for x
x = 140,783,214,287,839.25/19,251,786.75 - Step 6: Final answer
x = 7,312,734.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.