Finding the Fourth Proportional to 660,485,025.20, 990,727,537.80 and 354,375,009.20
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Solution
The fourth proportional to 660,485,025.20, 990,727,537.80 and 354,375,009.20 is: 531,562,513.80
Step by Step Solution
- Step 1: Write the proportion equation
660,485,025.20 : 990,727,537.80 = 354,375,009.20 : x - Step 2: Convert to fraction form
660,485,025.20/990,727,537.80 = 354,375,009.20/x - Step 3: Cross multiply
660,485,025.20x = 990,727,537.80 × 354,375,009.20 - Step 4: Simplify right side
660,485,025.20x = 351,089,080,322,568,320 - Step 5: Solve for x
x = 351,089,080,322,568,320/660,485,025.20 - Step 6: Final answer
x = 531,562,513.80
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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.