Finding the Fourth Proportional to 878,149.14, 1,211,838.21 and 475,740.18
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Solution
The fourth proportional to 878,149.14, 1,211,838.21 and 475,740.18 is: 656,517.33
Step by Step Solution
- Step 1: Write the proportion equation
878,149.14 : 1,211,838.21 = 475,740.18 : x - Step 2: Convert to fraction form
878,149.14/1,211,838.21 = 475,740.18/x - Step 3: Cross multiply
878,149.14x = 1,211,838.21 × 475,740.18 - Step 4: Simplify right side
878,149.14x = 576,520,128,156.28 - Step 5: Solve for x
x = 576,520,128,156.28/878,149.14 - Step 6: Final answer
x = 656,517.33
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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.