Finding the Fourth Proportional to 639,738,512.80, 959,607,769.20 and 295,364,744.80
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Solution
The fourth proportional to 639,738,512.80, 959,607,769.20 and 295,364,744.80 is: 443,047,117.20
Step by Step Solution
- Step 1: Write the proportion equation
639,738,512.80 : 959,607,769.20 = 295,364,744.80 : x - Step 2: Convert to fraction form
639,738,512.80/959,607,769.20 = 295,364,744.80/x - Step 3: Cross multiply
639,738,512.80x = 959,607,769.20 × 295,364,744.80 - Step 4: Simplify right side
639,738,512.80x = 283,434,303,857,855,328 - Step 5: Solve for x
x = 283,434,303,857,855,328/639,738,512.80 - Step 6: Final answer
x = 443,047,117.20
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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.