Finding the Fourth Proportional to 412,989.84, 619,353.42 and 280,720.08
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Solution
The fourth proportional to 412,989.84, 619,353.42 and 280,720.08 is: 420,990.84
Step by Step Solution
- Step 1: Write the proportion equation
412,989.84 : 619,353.42 = 280,720.08 : x - Step 2: Convert to fraction form
412,989.84/619,353.42 = 280,720.08/x - Step 3: Cross multiply
412,989.84x = 619,353.42 × 280,720.08 - Step 4: Simplify right side
412,989.84x = 173,864,941,610.67 - Step 5: Solve for x
x = 173,864,941,610.67/412,989.84 - Step 6: Final answer
x = 420,990.84
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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.