Finding the Fourth Proportional to 1,916,313.97, 2,643,845.51 and 1,228,365.19
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Solution
The fourth proportional to 1,916,313.97, 2,643,845.51 and 1,228,365.19 is: 1,694,715.91
Step by Step Solution
- Step 1: Write the proportion equation
1,916,313.97 : 2,643,845.51 = 1,228,365.19 : x - Step 2: Convert to fraction form
1,916,313.97/2,643,845.51 = 1,228,365.19/x - Step 3: Cross multiply
1,916,313.97x = 2,643,845.51 × 1,228,365.19 - Step 4: Simplify right side
1,916,313.97x = 3,247,607,779,002.57 - Step 5: Solve for x
x = 3,247,607,779,002.57/1,916,313.97 - Step 6: Final answer
x = 1,694,715.91
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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.