Finding the Fourth Proportional to 492,455.70, 679,646.90 and 274,698.68
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Solution
The fourth proportional to 492,455.70, 679,646.90 and 274,698.68 is: 379,116.54
Step by Step Solution
- Step 1: Write the proportion equation
492,455.70 : 679,646.90 = 274,698.68 : x - Step 2: Convert to fraction form
492,455.70/679,646.90 = 274,698.68/x - Step 3: Cross multiply
492,455.70x = 679,646.90 × 274,698.68 - Step 4: Simplify right side
492,455.70x = 186,698,101,524.36 - Step 5: Solve for x
x = 186,698,101,524.36/492,455.70 - Step 6: Final answer
x = 379,116.54
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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.