Finding the Fourth Proportional to 656,817.26, 906,407.82 and 355,011.26
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Solution
The fourth proportional to 656,817.26, 906,407.82 and 355,011.26 is: 489,915.54
Step by Step Solution
- Step 1: Write the proportion equation
656,817.26 : 906,407.82 = 355,011.26 : x - Step 2: Convert to fraction form
656,817.26/906,407.82 = 355,011.26/x - Step 3: Cross multiply
656,817.26x = 906,407.82 × 355,011.26 - Step 4: Simplify right side
656,817.26x = 321,784,977,720.01 - Step 5: Solve for x
x = 321,784,977,720.01/656,817.26 - Step 6: Final answer
x = 489,915.54
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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.