Finding the Fourth Proportional to 3,178,672.85, 4,386,537.96 and 1,728,368.84
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Solution
The fourth proportional to 3,178,672.85, 4,386,537.96 and 1,728,368.84 is: 2,385,132.38
Step by Step Solution
- Step 1: Write the proportion equation
3,178,672.85 : 4,386,537.96 = 1,728,368.84 : x - Step 2: Convert to fraction form
3,178,672.85/4,386,537.96 = 1,728,368.84/x - Step 3: Cross multiply
3,178,672.85x = 4,386,537.96 × 1,728,368.84 - Step 4: Simplify right side
3,178,672.85x = 7,581,555,525,541.17 - Step 5: Solve for x
x = 7,581,555,525,541.17/3,178,672.85 - Step 6: Final answer
x = 2,385,132.38
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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.