Finding the Fourth Proportional to 636,437.70, 878,315.60 and 394,798.14
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Solution
The fourth proportional to 636,437.70, 878,315.60 and 394,798.14 is: 544,841.02
Step by Step Solution
- Step 1: Write the proportion equation
636,437.70 : 878,315.60 = 394,798.14 : x - Step 2: Convert to fraction form
636,437.70/878,315.60 = 394,798.14/x - Step 3: Cross multiply
636,437.70x = 878,315.60 × 394,798.14 - Step 4: Simplify right side
636,437.70x = 346,757,365,212.98 - Step 5: Solve for x
x = 346,757,365,212.98/636,437.70 - Step 6: Final answer
x = 544,841.02
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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.