Finding the Fourth Proportional to 636,894.92, 879,190.79 and 455,291.91
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Solution
The fourth proportional to 636,894.92, 879,190.79 and 455,291.91 is: 628,499.99
Step by Step Solution
- Step 1: Write the proportion equation
636,894.92 : 879,190.79 = 455,291.91 : x - Step 2: Convert to fraction form
636,894.92/879,190.79 = 455,291.91/x - Step 3: Cross multiply
636,894.92x = 879,190.79 × 455,291.91 - Step 4: Simplify right side
636,894.92x = 400,288,451,757.05 - Step 5: Solve for x
x = 400,288,451,757.05/636,894.92 - Step 6: Final answer
x = 628,499.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.