Finding the Fourth Proportional to 430,828.38, 645,239.37 and 415,881.18
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Solution
The fourth proportional to 430,828.38, 645,239.37 and 415,881.18 is: 622,853.38
Step by Step Solution
- Step 1: Write the proportion equation
430,828.38 : 645,239.37 = 415,881.18 : x - Step 2: Convert to fraction form
430,828.38/645,239.37 = 415,881.18/x - Step 3: Cross multiply
430,828.38x = 645,239.37 × 415,881.18 - Step 4: Simplify right side
430,828.38x = 268,342,910,578.06 - Step 5: Solve for x
x = 268,342,910,578.06/430,828.38 - Step 6: Final answer
x = 622,853.38
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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.