Finding the Fourth Proportional to 1,786,391.80, 2,679,587.70 and 664,228.60
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Solution
The fourth proportional to 1,786,391.80, 2,679,587.70 and 664,228.60 is: 996,342.90
Step by Step Solution
- Step 1: Write the proportion equation
1,786,391.80 : 2,679,587.70 = 664,228.60 : x - Step 2: Convert to fraction form
1,786,391.80/2,679,587.70 = 664,228.60/x - Step 3: Cross multiply
1,786,391.80x = 2,679,587.70 × 664,228.60 - Step 4: Simplify right side
1,786,391.80x = 1,779,858,786,548.22 - Step 5: Solve for x
x = 1,779,858,786,548.22/1,786,391.80 - Step 6: Final answer
x = 996,342.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.