Finding the Fourth Proportional to 1,139,236.79, 1,709,025.06 and 419,523.09
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Solution
The fourth proportional to 1,139,236.79, 1,709,025.06 and 419,523.09 is: 629,347.19
Step by Step Solution
- Step 1: Write the proportion equation
1,139,236.79 : 1,709,025.06 = 419,523.09 : x - Step 2: Convert to fraction form
1,139,236.79/1,709,025.06 = 419,523.09/x - Step 3: Cross multiply
1,139,236.79x = 1,709,025.06 × 419,523.09 - Step 4: Simplify right side
1,139,236.79x = 716,975,474,058.64 - Step 5: Solve for x
x = 716,975,474,058.64/1,139,236.79 - Step 6: Final answer
x = 629,347.19
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.