Finding the Fourth Proportional to 1,603,393.74, 2,212,715.21 and 878,241.51
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Solution
The fourth proportional to 1,603,393.74, 2,212,715.21 and 878,241.51 is: 1,211,990.73
Step by Step Solution
- Step 1: Write the proportion equation
1,603,393.74 : 2,212,715.21 = 878,241.51 : x - Step 2: Convert to fraction form
1,603,393.74/2,212,715.21 = 878,241.51/x - Step 3: Cross multiply
1,603,393.74x = 2,212,715.21 × 878,241.51 - Step 4: Simplify right side
1,603,393.74x = 1,943,298,342,839.16 - Step 5: Solve for x
x = 1,943,298,342,839.16/1,603,393.74 - Step 6: Final answer
x = 1,211,990.73
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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.