Finding the Fourth Proportional to 485,109,999.20, 727,664,998.80 and 370,318,743.20
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Solution
The fourth proportional to 485,109,999.20, 727,664,998.80 and 370,318,743.20 is: 555,478,114.80
Step by Step Solution
- Step 1: Write the proportion equation
485,109,999.20 : 727,664,998.80 = 370,318,743.20 : x - Step 2: Convert to fraction form
485,109,999.20/727,664,998.80 = 370,318,743.20/x - Step 3: Cross multiply
485,109,999.20x = 727,664,998.80 × 370,318,743.20 - Step 4: Simplify right side
485,109,999.20x = 269,467,987,826,245,472 - Step 5: Solve for x
x = 269,467,987,826,245,472/485,109,999.20 - Step 6: Final answer
x = 555,478,114.80
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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.