Finding the Fourth Proportional to 636,432.85, 878,058.79 and 394,628.41
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Solution
The fourth proportional to 636,432.85, 878,058.79 and 394,628.41 is: 544,451.70
Step by Step Solution
- Step 1: Write the proportion equation
636,432.85 : 878,058.79 = 394,628.41 : x - Step 2: Convert to fraction form
636,432.85/878,058.79 = 394,628.41/x - Step 3: Cross multiply
636,432.85x = 878,058.79 × 394,628.41 - Step 4: Simplify right side
636,432.85x = 346,506,944,184.22 - Step 5: Solve for x
x = 346,506,944,184.22/636,432.85 - Step 6: Final answer
x = 544,451.70
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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.