Finding the Fourth Proportional to 668,711.80, 922,643.74 and 396,553.42
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Solution
The fourth proportional to 668,711.80, 922,643.74 and 396,553.42 is: 547,137.84
Step by Step Solution
- Step 1: Write the proportion equation
668,711.80 : 922,643.74 = 396,553.42 : x - Step 2: Convert to fraction form
668,711.80/922,643.74 = 396,553.42/x - Step 3: Cross multiply
668,711.80x = 922,643.74 × 396,553.42 - Step 4: Simplify right side
668,711.80x = 365,877,530,538.59 - Step 5: Solve for x
x = 365,877,530,538.59/668,711.80 - Step 6: Final answer
x = 547,137.84
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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.