Finding the Fourth Proportional to 664,302,643.20, 996,453,964.80 and 479,680,039.80
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Solution
The fourth proportional to 664,302,643.20, 996,453,964.80 and 479,680,039.80 is: 719,520,059.70
Step by Step Solution
- Step 1: Write the proportion equation
664,302,643.20 : 996,453,964.80 = 479,680,039.80 : x - Step 2: Convert to fraction form
664,302,643.20/996,453,964.80 = 479,680,039.80/x - Step 3: Cross multiply
664,302,643.20x = 996,453,964.80 × 479,680,039.80 - Step 4: Simplify right side
664,302,643.20x = 477,979,077,494,131,776 - Step 5: Solve for x
x = 477,979,077,494,131,776/664,302,643.20 - Step 6: Final answer
x = 719,520,059.70
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Similar ratio
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1.5x scale
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.