Finding the Fourth Proportional to 656,296.28, 905,688.84 and 354,490.28
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Solution
The fourth proportional to 656,296.28, 905,688.84 and 354,490.28 is: 489,196.57
Step by Step Solution
- Step 1: Write the proportion equation
656,296.28 : 905,688.84 = 354,490.28 : x - Step 2: Convert to fraction form
656,296.28/905,688.84 = 354,490.28/x - Step 3: Cross multiply
656,296.28x = 905,688.84 × 354,490.28 - Step 4: Simplify right side
656,296.28x = 321,057,890,484.48 - Step 5: Solve for x
x = 321,057,890,484.48/656,296.28 - Step 6: Final answer
x = 489,196.57
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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.