Finding the Fourth Proportional to 878,138.17, 1,211,386.84 and 587,761.87
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Solution
The fourth proportional to 878,138.17, 1,211,386.84 and 587,761.87 is: 810,814.31
Step by Step Solution
- Step 1: Write the proportion equation
878,138.17 : 1,211,386.84 = 587,761.87 : x - Step 2: Convert to fraction form
878,138.17/1,211,386.84 = 587,761.87/x - Step 3: Cross multiply
878,138.17x = 1,211,386.84 × 587,761.87 - Step 4: Simplify right side
878,138.17x = 712,006,994,371.79 - Step 5: Solve for x
x = 712,006,994,371.79/878,138.17 - Step 6: Final answer
x = 810,814.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.