Finding the Fourth Proportional to 391,146.70, 548,392.70 and 391,146.70
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Solution
The fourth proportional to 391,146.70, 548,392.70 and 391,146.70 is: 548,392.70
Step by Step Solution
- Step 1: Write the proportion equation
391,146.70 : 548,392.70 = 391,146.70 : x - Step 2: Convert to fraction form
391,146.70/548,392.70 = 391,146.70/x - Step 3: Cross multiply
391,146.70x = 548,392.70 × 391,146.70 - Step 4: Simplify right side
391,146.70x = 214,501,994,909.09 - Step 5: Solve for x
x = 214,501,994,909.09/391,146.70 - Step 6: Final answer
x = 548,392.70
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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.