Finding the Fourth Proportional to 1,421,150.10, 1,961,163.36 and 776,555.43
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Solution
The fourth proportional to 1,421,150.10, 1,961,163.36 and 776,555.43 is: 1,071,633.50
Step by Step Solution
- Step 1: Write the proportion equation
1,421,150.10 : 1,961,163.36 = 776,555.43 : x - Step 2: Convert to fraction form
1,421,150.10/1,961,163.36 = 776,555.43/x - Step 3: Cross multiply
1,421,150.10x = 1,961,163.36 × 776,555.43 - Step 4: Simplify right side
1,421,150.10x = 1,522,952,056,325.05 - Step 5: Solve for x
x = 1,522,952,056,325.05/1,421,150.10 - Step 6: Final answer
x = 1,071,633.50
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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.