Finding the Fourth Proportional to 6,639,721.63, 9,959,935.61 and 2,091,126.13
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Solution
The fourth proportional to 6,639,721.63, 9,959,935.61 and 2,091,126.13 is: 3,136,800.42
Step by Step Solution
- Step 1: Write the proportion equation
6,639,721.63 : 9,959,935.61 = 2,091,126.13 : x - Step 2: Convert to fraction form
6,639,721.63/9,959,935.61 = 2,091,126.13/x - Step 3: Cross multiply
6,639,721.63x = 9,959,935.61 × 2,091,126.13 - Step 4: Simplify right side
6,639,721.63x = 20,827,481,587,516.46 - Step 5: Solve for x
x = 20,827,481,587,516.46/6,639,721.63 - Step 6: Final answer
x = 3,136,800.42
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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.