Finding the Fourth Proportional to 485,764.20, 728,646.30 and 397,117.80
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Solution
The fourth proportional to 485,764.20, 728,646.30 and 397,117.80 is: 595,676.70
Step by Step Solution
- Step 1: Write the proportion equation
485,764.20 : 728,646.30 = 397,117.80 : x - Step 2: Convert to fraction form
485,764.20/728,646.30 = 397,117.80/x - Step 3: Cross multiply
485,764.20x = 728,646.30 × 397,117.80 - Step 4: Simplify right side
485,764.20x = 289,358,415,634.14 - Step 5: Solve for x
x = 289,358,415,634.14/485,764.20 - Step 6: Final answer
x = 595,676.70
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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.