Finding the Fourth Proportional to 636,315.80, 878,121.68 and 349,837.88
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Solution
The fourth proportional to 636,315.80, 878,121.68 and 349,837.88 is: 482,779.50
Step by Step Solution
- Step 1: Write the proportion equation
636,315.80 : 878,121.68 = 349,837.88 : x - Step 2: Convert to fraction form
636,315.80/878,121.68 = 349,837.88/x - Step 3: Cross multiply
636,315.80x = 878,121.68 × 349,837.88 - Step 4: Simplify right side
636,315.80x = 307,200,220,773.44 - Step 5: Solve for x
x = 307,200,220,773.44/636,315.80 - Step 6: Final answer
x = 482,779.50
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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.