Finding the Fourth Proportional to 1,421,523.12, 1,961,648.58 and 776,938.08
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Solution
The fourth proportional to 1,421,523.12, 1,961,648.58 and 776,938.08 is: 1,072,145.41
Step by Step Solution
- Step 1: Write the proportion equation
1,421,523.12 : 1,961,648.58 = 776,938.08 : x - Step 2: Convert to fraction form
1,421,523.12/1,961,648.58 = 776,938.08/x - Step 3: Cross multiply
1,421,523.12x = 1,961,648.58 × 776,938.08 - Step 4: Simplify right side
1,421,523.12x = 1,524,079,481,379.93 - Step 5: Solve for x
x = 1,524,079,481,379.93/1,421,523.12 - Step 6: Final answer
x = 1,072,145.41
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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.