Finding the Fourth Proportional to 1,511,430.40, 2,085,742.68 and 823,114.28
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Solution
The fourth proportional to 1,511,430.40, 2,085,742.68 and 823,114.28 is: 1,135,880.68
Step by Step Solution
- Step 1: Write the proportion equation
1,511,430.40 : 2,085,742.68 = 823,114.28 : x - Step 2: Convert to fraction form
1,511,430.40/2,085,742.68 = 823,114.28/x - Step 3: Cross multiply
1,511,430.40x = 2,085,742.68 × 823,114.28 - Step 4: Simplify right side
1,511,430.40x = 1,716,804,584,313.47 - Step 5: Solve for x
x = 1,716,804,584,313.47/1,511,430.40 - Step 6: Final answer
x = 1,135,880.68
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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.