Finding the Fourth Proportional to 1,781,163.28, 2,665,438.12 and 1,107,561.79
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Solution
The fourth proportional to 1,781,163.28, 2,665,438.12 and 1,107,561.79 is: 1,657,420.99
Step by Step Solution
- Step 1: Write the proportion equation
1,781,163.28 : 2,665,438.12 = 1,107,561.79 : x - Step 2: Convert to fraction form
1,781,163.28/2,665,438.12 = 1,107,561.79/x - Step 3: Cross multiply
1,781,163.28x = 2,665,438.12 × 1,107,561.79 - Step 4: Simplify right side
1,781,163.28x = 2,952,137,415,321.44 - Step 5: Solve for x
x = 2,952,137,415,321.44/1,781,163.28 - Step 6: Final answer
x = 1,657,420.99
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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.