Finding the Fourth Proportional to 818,626,512.60, 1,227,939,768.90 and 755,491,321.80
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Solution
The fourth proportional to 818,626,512.60, 1,227,939,768.90 and 755,491,321.80 is: 1,133,236,982.70
Step by Step Solution
- Step 1: Write the proportion equation
818,626,512.60 : 1,227,939,768.90 = 755,491,321.80 : x - Step 2: Convert to fraction form
818,626,512.60/1,227,939,768.90 = 755,491,321.80/x - Step 3: Cross multiply
818,626,512.60x = 1,227,939,768.90 × 755,491,321.80 - Step 4: Simplify right side
818,626,512.60x = 927,697,839,097,047,552 - Step 5: Solve for x
x = 927,697,839,097,047,552/818,626,512.60 - Step 6: Final answer
x = 1,133,236,982.70
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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.