Finding the Fourth Proportional to 559,171.40, 771,688.94 and 421,103.08
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Solution
The fourth proportional to 559,171.40, 771,688.94 and 421,103.08 is: 581,146.66
Step by Step Solution
- Step 1: Write the proportion equation
559,171.40 : 771,688.94 = 421,103.08 : x - Step 2: Convert to fraction form
559,171.40/771,688.94 = 421,103.08/x - Step 3: Cross multiply
559,171.40x = 771,688.94 × 421,103.08 - Step 4: Simplify right side
559,171.40x = 324,960,589,435.94 - Step 5: Solve for x
x = 324,960,589,435.94/559,171.40 - Step 6: Final answer
x = 581,146.66
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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.