Finding the Fourth Proportional to 449,498.10, 620,326.18 and 258,511.62
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Solution
The fourth proportional to 449,498.10, 620,326.18 and 258,511.62 is: 356,756.85
Step by Step Solution
- Step 1: Write the proportion equation
449,498.10 : 620,326.18 = 258,511.62 : x - Step 2: Convert to fraction form
449,498.10/620,326.18 = 258,511.62/x - Step 3: Cross multiply
449,498.10x = 620,326.18 × 258,511.62 - Step 4: Simplify right side
449,498.10x = 160,361,525,720.21 - Step 5: Solve for x
x = 160,361,525,720.21/449,498.10 - Step 6: Final answer
x = 356,756.85
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1.5x scale
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.