Finding the Fourth Proportional to 1,028,295.12, 1,542,426.15 and 280,341.12
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Solution
The fourth proportional to 1,028,295.12, 1,542,426.15 and 280,341.12 is: 420,507.17
Step by Step Solution
- Step 1: Write the proportion equation
1,028,295.12 : 1,542,426.15 = 280,341.12 : x - Step 2: Convert to fraction form
1,028,295.12/1,542,426.15 = 280,341.12/x - Step 3: Cross multiply
1,028,295.12x = 1,542,426.15 × 280,341.12 - Step 4: Simplify right side
1,028,295.12x = 432,405,474,408.29 - Step 5: Solve for x
x = 432,405,474,408.29/1,028,295.12 - Step 6: Final answer
x = 420,507.17
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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.