Finding the Fourth Proportional to 724,879.20, 1,087,318.80 and 647,464.80
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Solution
The fourth proportional to 724,879.20, 1,087,318.80 and 647,464.80 is: 971,197.20
Step by Step Solution
- Step 1: Write the proportion equation
724,879.20 : 1,087,318.80 = 647,464.80 : x - Step 2: Convert to fraction form
724,879.20/1,087,318.80 = 647,464.80/x - Step 3: Cross multiply
724,879.20x = 1,087,318.80 × 647,464.80 - Step 4: Simplify right side
724,879.20x = 704,000,649,378.24 - Step 5: Solve for x
x = 704,000,649,378.24/724,879.20 - Step 6: Final answer
x = 971,197.20
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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.