Finding the Fourth Proportional to 691,830.18, 1,037,659.41 and 186,430.68
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Solution
The fourth proportional to 691,830.18, 1,037,659.41 and 186,430.68 is: 279,622.88
Step by Step Solution
- Step 1: Write the proportion equation
691,830.18 : 1,037,659.41 = 186,430.68 : x - Step 2: Convert to fraction form
691,830.18/1,037,659.41 = 186,430.68/x - Step 3: Cross multiply
691,830.18x = 1,037,659.41 × 186,430.68 - Step 4: Simplify right side
691,830.18x = 193,451,549,414.70 - Step 5: Solve for x
x = 193,451,549,414.70/691,830.18 - Step 6: Final answer
x = 279,622.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.