Finding the Fourth Proportional to 1,971,889.78, 2,721,199.98 and 1,112,450.08
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Solution
The fourth proportional to 1,971,889.78, 2,721,199.98 and 1,112,450.08 is: 1,535,176.64
Step by Step Solution
- Step 1: Write the proportion equation
1,971,889.78 : 2,721,199.98 = 1,112,450.08 : x - Step 2: Convert to fraction form
1,971,889.78/2,721,199.98 = 1,112,450.08/x - Step 3: Cross multiply
1,971,889.78x = 2,721,199.98 × 1,112,450.08 - Step 4: Simplify right side
1,971,889.78x = 3,027,199,135,447.00 - Step 5: Solve for x
x = 3,027,199,135,447.00/1,971,889.78 - Step 6: Final answer
x = 1,535,176.64
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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.