Finding the Fourth Proportional to 1,989,457.36, 2,745,741.91 and 1,118,363.81
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Solution
The fourth proportional to 1,989,457.36, 2,745,741.91 and 1,118,363.81 is: 1,543,505.50
Step by Step Solution
- Step 1: Write the proportion equation
1,989,457.36 : 2,745,741.91 = 1,118,363.81 : x - Step 2: Convert to fraction form
1,989,457.36/2,745,741.91 = 1,118,363.81/x - Step 3: Cross multiply
1,989,457.36x = 2,745,741.91 × 1,118,363.81 - Step 4: Simplify right side
1,989,457.36x = 3,070,738,383,744.28 - Step 5: Solve for x
x = 3,070,738,383,744.28/1,989,457.36 - Step 6: Final answer
x = 1,543,505.50
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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.