Finding the Fourth Proportional to 1,491,036,361.20, 2,236,554,541.80 and 509,571,122.40
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Solution
The fourth proportional to 1,491,036,361.20, 2,236,554,541.80 and 509,571,122.40 is: 764,356,683.60
Step by Step Solution
- Step 1: Write the proportion equation
1,491,036,361.20 : 2,236,554,541.80 = 509,571,122.40 : x - Step 2: Convert to fraction form
1,491,036,361.20/2,236,554,541.80 = 509,571,122.40/x - Step 3: Cross multiply
1,491,036,361.20x = 2,236,554,541.80 × 509,571,122.40 - Step 4: Simplify right side
1,491,036,361.20x = 1,139,683,608,173,843,712 - Step 5: Solve for x
x = 1,139,683,608,173,843,712/1,491,036,361.20 - Step 6: Final answer
x = 764,356,683.60
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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.