Finding the Fourth Proportional to 1,321,012.80, 1,822,997.68 and 748,163.70
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Solution
The fourth proportional to 1,321,012.80, 1,822,997.68 and 748,163.70 is: 1,032,465.92
Step by Step Solution
- Step 1: Write the proportion equation
1,321,012.80 : 1,822,997.68 = 748,163.70 : x - Step 2: Convert to fraction form
1,321,012.80/1,822,997.68 = 748,163.70/x - Step 3: Cross multiply
1,321,012.80x = 1,822,997.68 × 748,163.70 - Step 4: Simplify right side
1,321,012.80x = 1,363,900,689,360.22 - Step 5: Solve for x
x = 1,363,900,689,360.22/1,321,012.80 - Step 6: Final answer
x = 1,032,465.92
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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.