Finding the Fourth Proportional to 708,589,080.80, 1,062,883,621.20 and 486,659,319.20
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Solution
The fourth proportional to 708,589,080.80, 1,062,883,621.20 and 486,659,319.20 is: 729,988,978.80
Step by Step Solution
- Step 1: Write the proportion equation
708,589,080.80 : 1,062,883,621.20 = 486,659,319.20 : x - Step 2: Convert to fraction form
708,589,080.80/1,062,883,621.20 = 486,659,319.20/x - Step 3: Cross multiply
708,589,080.80x = 1,062,883,621.20 × 486,659,319.20 - Step 4: Simplify right side
708,589,080.80x = 517,262,219,482,022,720 - Step 5: Solve for x
x = 517,262,219,482,022,720/708,589,080.80 - Step 6: Final answer
x = 729,988,978.80
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1.5x scale
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.