Finding the Fourth Proportional to 668,459.67, 922,475.87 and 381,979.07
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Solution
The fourth proportional to 668,459.67, 922,475.87 and 381,979.07 is: 527,131.99
Step by Step Solution
- Step 1: Write the proportion equation
668,459.67 : 922,475.87 = 381,979.07 : x - Step 2: Convert to fraction form
668,459.67/922,475.87 = 381,979.07/x - Step 3: Cross multiply
668,459.67x = 922,475.87 × 381,979.07 - Step 4: Simplify right side
668,459.67x = 352,366,477,404.08 - Step 5: Solve for x
x = 352,366,477,404.08/668,459.67 - Step 6: Final answer
x = 527,131.99
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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.