Finding the Fourth Proportional to 636,433.70, 878,310.08 and 394,794.14
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Solution
The fourth proportional to 636,433.70, 878,310.08 and 394,794.14 is: 544,835.50
Step by Step Solution
- Step 1: Write the proportion equation
636,433.70 : 878,310.08 = 394,794.14 : x - Step 2: Convert to fraction form
636,433.70/878,310.08 = 394,794.14/x - Step 3: Cross multiply
636,433.70x = 878,310.08 × 394,794.14 - Step 4: Simplify right side
636,433.70x = 346,751,672,686.93 - Step 5: Solve for x
x = 346,751,672,686.93/636,433.70 - Step 6: Final answer
x = 544,835.50
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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.