Finding the Fourth Proportional to 684,745.20, 1,027,117.80 and 517,439.70
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Solution
The fourth proportional to 684,745.20, 1,027,117.80 and 517,439.70 is: 776,159.55
Step by Step Solution
- Step 1: Write the proportion equation
684,745.20 : 1,027,117.80 = 517,439.70 : x - Step 2: Convert to fraction form
684,745.20/1,027,117.80 = 517,439.70/x - Step 3: Cross multiply
684,745.20x = 1,027,117.80 × 517,439.70 - Step 4: Simplify right side
684,745.20x = 531,471,526,296.66 - Step 5: Solve for x
x = 531,471,526,296.66/684,745.20 - Step 6: Final answer
x = 776,159.55
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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.