Finding the Fourth Proportional to 1,243,257.42, 1,866,630.87 and 636,479.13
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Solution
The fourth proportional to 1,243,257.42, 1,866,630.87 and 636,479.13 is: 955,611.91
Step by Step Solution
- Step 1: Write the proportion equation
1,243,257.42 : 1,866,630.87 = 636,479.13 : x - Step 2: Convert to fraction form
1,243,257.42/1,866,630.87 = 636,479.13/x - Step 3: Cross multiply
1,243,257.42x = 1,866,630.87 × 636,479.13 - Step 4: Simplify right side
1,243,257.42x = 1,188,071,592,168.74 - Step 5: Solve for x
x = 1,188,071,592,168.74/1,243,257.42 - Step 6: Final answer
x = 955,611.91
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.