Finding the Fourth Proportional to 1,326,589.10, 1,989,865.12 and 756,754.10
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Solution
The fourth proportional to 1,326,589.10, 1,989,865.12 and 756,754.10 is: 1,135,120.58
Step by Step Solution
- Step 1: Write the proportion equation
1,326,589.10 : 1,989,865.12 = 756,754.10 : x - Step 2: Convert to fraction form
1,326,589.10/1,989,865.12 = 756,754.10/x - Step 3: Cross multiply
1,326,589.10x = 1,989,865.12 × 756,754.10 - Step 4: Simplify right side
1,326,589.10x = 1,505,838,588,006.99 - Step 5: Solve for x
x = 1,505,838,588,006.99/1,326,589.10 - Step 6: Final answer
x = 1,135,120.58
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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.