Finding the Fourth Proportional to 430,128.16, 644,714.16 and 324,604.96
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Solution
The fourth proportional to 430,128.16, 644,714.16 and 324,604.96 is: 486,546.65
Step by Step Solution
- Step 1: Write the proportion equation
430,128.16 : 644,714.16 = 324,604.96 : x - Step 2: Convert to fraction form
430,128.16/644,714.16 = 324,604.96/x - Step 3: Cross multiply
430,128.16x = 644,714.16 × 324,604.96 - Step 4: Simplify right side
430,128.16x = 209,277,414,118.23 - Step 5: Solve for x
x = 209,277,414,118.23/430,128.16 - Step 6: Final answer
x = 486,546.65
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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.