Finding the Fourth Proportional to 398,206,879.20, 597,310,318.80 and 317,585,311.20
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Solution
The fourth proportional to 398,206,879.20, 597,310,318.80 and 317,585,311.20 is: 476,377,966.80
Step by Step Solution
- Step 1: Write the proportion equation
398,206,879.20 : 597,310,318.80 = 317,585,311.20 : x - Step 2: Convert to fraction form
398,206,879.20/597,310,318.80 = 317,585,311.20/x - Step 3: Cross multiply
398,206,879.20x = 597,310,318.80 × 317,585,311.20 - Step 4: Simplify right side
398,206,879.20x = 189,696,983,479,069,184 - Step 5: Solve for x
x = 189,696,983,479,069,184/398,206,879.20 - Step 6: Final answer
x = 476,377,966.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.