Finding the Fourth Proportional to 1,515,378.10, 2,091,903.77 and 999,438.07
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Solution
The fourth proportional to 1,515,378.10, 2,091,903.77 and 999,438.07 is: 1,379,674.33
Step by Step Solution
- Step 1: Write the proportion equation
1,515,378.10 : 2,091,903.77 = 999,438.07 : x - Step 2: Convert to fraction form
1,515,378.10/2,091,903.77 = 999,438.07/x - Step 3: Cross multiply
1,515,378.10x = 2,091,903.77 × 999,438.07 - Step 4: Simplify right side
1,515,378.10x = 2,090,728,266,514.52 - Step 5: Solve for x
x = 2,090,728,266,514.52/1,515,378.10 - Step 6: Final answer
x = 1,379,674.33
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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.