Finding the Fourth Proportional to 1,603,638.22, 2,213,021.64 and 878,512.18
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Solution
The fourth proportional to 1,603,638.22, 2,213,021.64 and 878,512.18 is: 1,212,347.30
Step by Step Solution
- Step 1: Write the proportion equation
1,603,638.22 : 2,213,021.64 = 878,512.18 : x - Step 2: Convert to fraction form
1,603,638.22/2,213,021.64 = 878,512.18/x - Step 3: Cross multiply
1,603,638.22x = 2,213,021.64 × 878,512.18 - Step 4: Simplify right side
1,603,638.22x = 1,944,166,465,343.58 - Step 5: Solve for x
x = 1,944,166,465,343.58/1,603,638.22 - Step 6: Final answer
x = 1,212,347.30
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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.