Finding the Fourth Proportional to 486,319.12, 671,232.36 and 285,179.92
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Solution
The fourth proportional to 486,319.12, 671,232.36 and 285,179.92 is: 393,613.95
Step by Step Solution
- Step 1: Write the proportion equation
486,319.12 : 671,232.36 = 285,179.92 : x - Step 2: Convert to fraction form
486,319.12/671,232.36 = 285,179.92/x - Step 3: Cross multiply
486,319.12x = 671,232.36 × 285,179.92 - Step 4: Simplify right side
486,319.12x = 191,421,990,726.21 - Step 5: Solve for x
x = 191,421,990,726.21/486,319.12 - Step 6: Final answer
x = 393,613.95
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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.