Finding the Fourth Proportional to 1,239,612.16, 1,860,414.76 and 640,748.96
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Solution
The fourth proportional to 1,239,612.16, 1,860,414.76 and 640,748.96 is: 961,638.54
Step by Step Solution
- Step 1: Write the proportion equation
1,239,612.16 : 1,860,414.76 = 640,748.96 : x - Step 2: Convert to fraction form
1,239,612.16/1,860,414.76 = 640,748.96/x - Step 3: Cross multiply
1,239,612.16x = 1,860,414.76 × 640,748.96 - Step 4: Simplify right side
1,239,612.16x = 1,192,058,822,638.65 - Step 5: Solve for x
x = 1,192,058,822,638.65/1,239,612.16 - Step 6: Final answer
x = 961,638.54
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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.