Finding the Fourth Proportional to 668,644.75, 922,745.96 and 366,838.75
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Solution
The fourth proportional to 668,644.75, 922,745.96 and 366,838.75 is: 506,246.37
Step by Step Solution
- Step 1: Write the proportion equation
668,644.75 : 922,745.96 = 366,838.75 : x - Step 2: Convert to fraction form
668,644.75/922,745.96 = 366,838.75/x - Step 3: Cross multiply
668,644.75x = 922,745.96 × 366,838.75 - Step 4: Simplify right side
668,644.75x = 338,498,974,533.95 - Step 5: Solve for x
x = 338,498,974,533.95/668,644.75 - Step 6: Final answer
x = 506,246.37
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1.5x scale
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.