Finding the Fourth Proportional to 472,405,690.80, 708,608,536.20 and 407,782,465.20
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Solution
The fourth proportional to 472,405,690.80, 708,608,536.20 and 407,782,465.20 is: 611,673,697.80
Step by Step Solution
- Step 1: Write the proportion equation
472,405,690.80 : 708,608,536.20 = 407,782,465.20 : x - Step 2: Convert to fraction form
472,405,690.80/708,608,536.20 = 407,782,465.20/x - Step 3: Cross multiply
472,405,690.80x = 708,608,536.20 × 407,782,465.20 - Step 4: Simplify right side
472,405,690.80x = 288,958,135,753,399,424 - Step 5: Solve for x
x = 288,958,135,753,399,424/472,405,690.80 - Step 6: Final answer
x = 611,673,697.80
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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.