Finding the Fourth Proportional to 1,603,681.64, 2,212,241.64 and 991,638.80
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Solution
The fourth proportional to 1,603,681.64, 2,212,241.64 and 991,638.80 is: 1,367,942.73
Step by Step Solution
- Step 1: Write the proportion equation
1,603,681.64 : 2,212,241.64 = 991,638.80 : x - Step 2: Convert to fraction form
1,603,681.64/2,212,241.64 = 991,638.80/x - Step 3: Cross multiply
1,603,681.64x = 2,212,241.64 × 991,638.80 - Step 4: Simplify right side
1,603,681.64x = 2,193,744,645,199.63 - Step 5: Solve for x
x = 2,193,744,645,199.63/1,603,681.64 - Step 6: Final answer
x = 1,367,942.73
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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.