Finding the Fourth Proportional to 440,125,872.80, 660,188,809.20 and 310,985,709.80
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Solution
The fourth proportional to 440,125,872.80, 660,188,809.20 and 310,985,709.80 is: 466,478,564.70
Step by Step Solution
- Step 1: Write the proportion equation
440,125,872.80 : 660,188,809.20 = 310,985,709.80 : x - Step 2: Convert to fraction form
440,125,872.80/660,188,809.20 = 310,985,709.80/x - Step 3: Cross multiply
440,125,872.80x = 660,188,809.20 × 310,985,709.80 - Step 4: Simplify right side
440,125,872.80x = 205,309,285,431,078,784 - Step 5: Solve for x
x = 205,309,285,431,078,784/440,125,872.80 - Step 6: Final answer
x = 466,478,564.70
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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.