Finding the Fourth Proportional to 412,990.84, 619,354.92 and 280,721.08
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Solution
The fourth proportional to 412,990.84, 619,354.92 and 280,721.08 is: 420,992.34
Step by Step Solution
- Step 1: Write the proportion equation
412,990.84 : 619,354.92 = 280,721.08 : x - Step 2: Convert to fraction form
412,990.84/619,354.92 = 280,721.08/x - Step 3: Cross multiply
412,990.84x = 619,354.92 × 280,721.08 - Step 4: Simplify right side
412,990.84x = 173,865,982,045.71 - Step 5: Solve for x
x = 173,865,982,045.71/412,990.84 - Step 6: Final answer
x = 420,992.34
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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.