Finding the Fourth Proportional to 828,458.38, 1,143,139.20 and 465,860.62
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Solution
The fourth proportional to 828,458.38, 1,143,139.20 and 465,860.62 is: 642,812.65
Step by Step Solution
- Step 1: Write the proportion equation
828,458.38 : 1,143,139.20 = 465,860.62 : x - Step 2: Convert to fraction form
828,458.38/1,143,139.20 = 465,860.62/x - Step 3: Cross multiply
828,458.38x = 1,143,139.20 × 465,860.62 - Step 4: Simplify right side
828,458.38x = 532,543,529,710.09 - Step 5: Solve for x
x = 532,543,529,710.09/828,458.38 - Step 6: Final answer
x = 642,812.65
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1.5x scale
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.