Finding the Fourth Proportional to 743,478.12, 1,115,715.42 and 477,425.48
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Solution
The fourth proportional to 743,478.12, 1,115,715.42 and 477,425.48 is: 716,458.16
Step by Step Solution
- Step 1: Write the proportion equation
743,478.12 : 1,115,715.42 = 477,425.48 : x - Step 2: Convert to fraction form
743,478.12/1,115,715.42 = 477,425.48/x - Step 3: Cross multiply
743,478.12x = 1,115,715.42 × 477,425.48 - Step 4: Simplify right side
743,478.12x = 532,670,964,358.32 - Step 5: Solve for x
x = 532,670,964,358.32/743,478.12 - Step 6: Final answer
x = 716,458.16
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.