Finding the Fourth Proportional to 398,580.70, 558,427.70 and 398,580.70
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Solution
The fourth proportional to 398,580.70, 558,427.70 and 398,580.70 is: 558,427.70
Step by Step Solution
- Step 1: Write the proportion equation
398,580.70 : 558,427.70 = 398,580.70 : x - Step 2: Convert to fraction form
398,580.70/558,427.70 = 398,580.70/x - Step 3: Cross multiply
398,580.70x = 558,427.70 × 398,580.70 - Step 4: Simplify right side
398,580.70x = 222,578,503,565.39 - Step 5: Solve for x
x = 222,578,503,565.39/398,580.70 - Step 6: Final answer
x = 558,427.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.