Finding the Fourth Proportional to 1,118,378.46, 1,543,405.97 and 634,988.58
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Solution
The fourth proportional to 1,118,378.46, 1,543,405.97 and 634,988.58 is: 876,309.05
Step by Step Solution
- Step 1: Write the proportion equation
1,118,378.46 : 1,543,405.97 = 634,988.58 : x - Step 2: Convert to fraction form
1,118,378.46/1,543,405.97 = 634,988.58/x - Step 3: Cross multiply
1,118,378.46x = 1,543,405.97 × 634,988.58 - Step 4: Simplify right side
1,118,378.46x = 980,045,162,078.88 - Step 5: Solve for x
x = 980,045,162,078.88/1,118,378.46 - Step 6: Final answer
x = 876,309.05
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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.