Finding the Fourth Proportional to 1,028,313.13, 1,542,453.18 and 280,359.13
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Solution
The fourth proportional to 1,028,313.13, 1,542,453.18 and 280,359.13 is: 420,534.19
Step by Step Solution
- Step 1: Write the proportion equation
1,028,313.13 : 1,542,453.18 = 280,359.13 : x - Step 2: Convert to fraction form
1,028,313.13/1,542,453.18 = 280,359.13/x - Step 3: Cross multiply
1,028,313.13x = 1,542,453.18 × 280,359.13 - Step 4: Simplify right side
1,028,313.13x = 432,440,831,610.53 - Step 5: Solve for x
x = 432,440,831,610.53/1,028,313.13 - Step 6: Final answer
x = 420,534.19
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1.5x scale
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.