Finding the Fourth Proportional to 1,292,406.21, 1,783,551.84 and 719,485.11
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Solution
The fourth proportional to 1,292,406.21, 1,783,551.84 and 719,485.11 is: 992,906.86
Step by Step Solution
- Step 1: Write the proportion equation
1,292,406.21 : 1,783,551.84 = 719,485.11 : x - Step 2: Convert to fraction form
1,292,406.21/1,783,551.84 = 719,485.11/x - Step 3: Cross multiply
1,292,406.21x = 1,783,551.84 × 719,485.11 - Step 4: Simplify right side
1,292,406.21x = 1,283,238,991,793.10 - Step 5: Solve for x
x = 1,283,238,991,793.10/1,292,406.21 - Step 6: Final answer
x = 992,906.86
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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.