Finding the Fourth Proportional to 1,118,372.09, 1,543,397.16 and 634,982.21
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Solution
The fourth proportional to 1,118,372.09, 1,543,397.16 and 634,982.21 is: 876,300.25
Step by Step Solution
- Step 1: Write the proportion equation
1,118,372.09 : 1,543,397.16 = 634,982.21 : x - Step 2: Convert to fraction form
1,118,372.09/1,543,397.16 = 634,982.21/x - Step 3: Cross multiply
1,118,372.09x = 1,543,397.16 × 634,982.21 - Step 4: Simplify right side
1,118,372.09x = 980,029,740,016.46 - Step 5: Solve for x
x = 980,029,740,016.46/1,118,372.09 - Step 6: Final answer
x = 876,300.25
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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.