Finding the Fourth Proportional to 2,178,376.71, 3,006,242.79 and 1,211,576.91
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Solution
The fourth proportional to 2,178,376.71, 3,006,242.79 and 1,211,576.91 is: 1,672,022.26
Step by Step Solution
- Step 1: Write the proportion equation
2,178,376.71 : 3,006,242.79 = 1,211,576.91 : x - Step 2: Convert to fraction form
2,178,376.71/3,006,242.79 = 1,211,576.91/x - Step 3: Cross multiply
2,178,376.71x = 3,006,242.79 × 1,211,576.91 - Step 4: Simplify right side
2,178,376.71x = 3,642,294,335,186.77 - Step 5: Solve for x
x = 3,642,294,335,186.77/2,178,376.71 - Step 6: Final answer
x = 1,672,022.26
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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.