Finding the Fourth Proportional to 2,129,487.90, 2,938,678.29 and 1,162,618.14
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Solution
The fourth proportional to 2,129,487.90, 2,938,678.29 and 1,162,618.14 is: 1,604,404.84
Step by Step Solution
- Step 1: Write the proportion equation
2,129,487.90 : 2,938,678.29 = 1,162,618.14 : x - Step 2: Convert to fraction form
2,129,487.90/2,938,678.29 = 1,162,618.14/x - Step 3: Cross multiply
2,129,487.90x = 2,938,678.29 × 1,162,618.14 - Step 4: Simplify right side
2,129,487.90x = 3,416,560,687,578.18 - Step 5: Solve for x
x = 3,416,560,687,578.18/2,129,487.90 - Step 6: Final answer
x = 1,604,404.84
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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.