Finding the Fourth Proportional to 1,971,542.18, 2,720,810.92 and 1,112,102.20
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Solution
The fourth proportional to 1,971,542.18, 2,720,810.92 and 1,112,102.20 is: 1,534,747.69
Step by Step Solution
- Step 1: Write the proportion equation
1,971,542.18 : 2,720,810.92 = 1,112,102.20 : x - Step 2: Convert to fraction form
1,971,542.18/2,720,810.92 = 1,112,102.20/x - Step 3: Cross multiply
1,971,542.18x = 2,720,810.92 × 1,112,102.20 - Step 4: Simplify right side
1,971,542.18x = 3,025,819,809,916.02 - Step 5: Solve for x
x = 3,025,819,809,916.02/1,971,542.18 - Step 6: Final answer
x = 1,534,747.69
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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.