Finding the Fourth Proportional to 489,657.80, 734,486.70 and 279,705.80
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Solution
The fourth proportional to 489,657.80, 734,486.70 and 279,705.80 is: 419,558.70
Step by Step Solution
- Step 1: Write the proportion equation
489,657.80 : 734,486.70 = 279,705.80 : x - Step 2: Convert to fraction form
489,657.80/734,486.70 = 279,705.80/x - Step 3: Cross multiply
489,657.80x = 734,486.70 × 279,705.80 - Step 4: Simplify right side
489,657.80x = 205,440,190,012.86 - Step 5: Solve for x
x = 205,440,190,012.86/489,657.80 - Step 6: Final answer
x = 419,558.70
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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.