Finding the Fourth Proportional to 1,123,381.21, 1,684,905.74 and 413,243.17
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Solution
The fourth proportional to 1,123,381.21, 1,684,905.74 and 413,243.17 is: 619,803.66
Step by Step Solution
- Step 1: Write the proportion equation
1,123,381.21 : 1,684,905.74 = 413,243.17 : x - Step 2: Convert to fraction form
1,123,381.21/1,684,905.74 = 413,243.17/x - Step 3: Cross multiply
1,123,381.21x = 1,684,905.74 × 413,243.17 - Step 4: Simplify right side
1,123,381.21x = 696,275,789,148.80 - Step 5: Solve for x
x = 696,275,789,148.80/1,123,381.21 - Step 6: Final answer
x = 619,803.66
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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.