Finding the Fourth Proportional to 636,462.63, 878,099.84 and 394,658.19
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Solution
The fourth proportional to 636,462.63, 878,099.84 and 394,658.19 is: 544,492.76
Step by Step Solution
- Step 1: Write the proportion equation
636,462.63 : 878,099.84 = 394,658.19 : x - Step 2: Convert to fraction form
636,462.63/878,099.84 = 394,658.19/x - Step 3: Cross multiply
636,462.63x = 878,099.84 × 394,658.19 - Step 4: Simplify right side
636,462.63x = 346,549,291,520.40 - Step 5: Solve for x
x = 346,549,291,520.40/636,462.63 - Step 6: Final answer
x = 544,492.76
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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.