Finding the Fourth Proportional to 386,468,626.20, 579,702,939.30 and 264,024,619.80
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Solution
The fourth proportional to 386,468,626.20, 579,702,939.30 and 264,024,619.80 is: 396,036,929.70
Step by Step Solution
- Step 1: Write the proportion equation
386,468,626.20 : 579,702,939.30 = 264,024,619.80 : x - Step 2: Convert to fraction form
386,468,626.20/579,702,939.30 = 264,024,619.80/x - Step 3: Cross multiply
386,468,626.20x = 579,702,939.30 × 264,024,619.80 - Step 4: Simplify right side
386,468,626.20x = 153,055,848,145,624,960 - Step 5: Solve for x
x = 153,055,848,145,624,960/386,468,626.20 - Step 6: Final answer
x = 396,036,929.70
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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.