Finding the Fourth Proportional to 398,586,643.20, 597,879,964.80 and 223,529,977.80
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Solution
The fourth proportional to 398,586,643.20, 597,879,964.80 and 223,529,977.80 is: 335,294,966.70
Step by Step Solution
- Step 1: Write the proportion equation
398,586,643.20 : 597,879,964.80 = 223,529,977.80 : x - Step 2: Convert to fraction form
398,586,643.20/597,879,964.80 = 223,529,977.80/x - Step 3: Cross multiply
398,586,643.20x = 597,879,964.80 × 223,529,977.80 - Step 4: Simplify right side
398,586,643.20x = 133,644,095,258,808,784 - Step 5: Solve for x
x = 133,644,095,258,808,784/398,586,643.20 - Step 6: Final answer
x = 335,294,966.70
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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.