Finding the Fourth Proportional to 818,747.70, 1,228,121.55 and 784,193.10
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Solution
The fourth proportional to 818,747.70, 1,228,121.55 and 784,193.10 is: 1,176,289.65
Step by Step Solution
- Step 1: Write the proportion equation
818,747.70 : 1,228,121.55 = 784,193.10 : x - Step 2: Convert to fraction form
818,747.70/1,228,121.55 = 784,193.10/x - Step 3: Cross multiply
818,747.70x = 1,228,121.55 × 784,193.10 - Step 4: Simplify right side
818,747.70x = 963,084,445,471.31 - Step 5: Solve for x
x = 963,084,445,471.31/818,747.70 - Step 6: Final answer
x = 1,176,289.65
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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.