Finding the Fourth Proportional to 1,918,571.47, 2,647,637.09 and 1,059,138.79
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Solution
The fourth proportional to 1,918,571.47, 2,647,637.09 and 1,059,138.79 is: 1,461,616.20
Step by Step Solution
- Step 1: Write the proportion equation
1,918,571.47 : 2,647,637.09 = 1,059,138.79 : x - Step 2: Convert to fraction form
1,918,571.47/2,647,637.09 = 1,059,138.79/x - Step 3: Cross multiply
1,918,571.47x = 2,647,637.09 × 1,059,138.79 - Step 4: Simplify right side
1,918,571.47x = 2,804,215,143,861.72 - Step 5: Solve for x
x = 2,804,215,143,861.72/1,918,571.47 - Step 6: Final answer
x = 1,461,616.20
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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.