Finding the Fourth Proportional to 668,490.21, 922,217.94 and 396,569.57
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Solution
The fourth proportional to 668,490.21, 922,217.94 and 396,569.57 is: 547,088.89
Step by Step Solution
- Step 1: Write the proportion equation
668,490.21 : 922,217.94 = 396,569.57 : x - Step 2: Convert to fraction form
668,490.21/922,217.94 = 396,569.57/x - Step 3: Cross multiply
668,490.21x = 922,217.94 × 396,569.57 - Step 4: Simplify right side
668,490.21x = 365,723,567,301.00 - Step 5: Solve for x
x = 365,723,567,301.00/668,490.21 - Step 6: Final answer
x = 547,088.89
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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.