Finding the Fourth Proportional to 2,672,021.60, 3,998,701.20 and 1,869,538.40
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Solution
The fourth proportional to 2,672,021.60, 3,998,701.20 and 1,869,538.40 is: 2,797,778.82
Step by Step Solution
- Step 1: Write the proportion equation
2,672,021.60 : 3,998,701.20 = 1,869,538.40 : x - Step 2: Convert to fraction form
2,672,021.60/3,998,701.20 = 1,869,538.40/x - Step 3: Cross multiply
2,672,021.60x = 3,998,701.20 × 1,869,538.40 - Step 4: Simplify right side
2,672,021.60x = 7,475,725,443,526.08 - Step 5: Solve for x
x = 7,475,725,443,526.08/2,672,021.60 - Step 6: Final answer
x = 2,797,778.82
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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.