Finding the Fourth Proportional to 1,409,951.21, 1,938,251.03 and 1,212,998.19
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Solution
The fourth proportional to 1,409,951.21, 1,938,251.03 and 1,212,998.19 is: 1,667,500.95
Step by Step Solution
- Step 1: Write the proportion equation
1,409,951.21 : 1,938,251.03 = 1,212,998.19 : x - Step 2: Convert to fraction form
1,409,951.21/1,938,251.03 = 1,212,998.19/x - Step 3: Cross multiply
1,409,951.21x = 1,938,251.03 × 1,212,998.19 - Step 4: Simplify right side
1,409,951.21x = 2,351,094,977,822.20 - Step 5: Solve for x
x = 2,351,094,977,822.20/1,409,951.21 - Step 6: Final answer
x = 1,667,500.95
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.