Finding the Fourth Proportional to 1,290,677.81, 1,936,020.35 and 392,126.99
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Solution
The fourth proportional to 1,290,677.81, 1,936,020.35 and 392,126.99 is: 588,191.58
Step by Step Solution
- Step 1: Write the proportion equation
1,290,677.81 : 1,936,020.35 = 392,126.99 : x - Step 2: Convert to fraction form
1,290,677.81/1,936,020.35 = 392,126.99/x - Step 3: Cross multiply
1,290,677.81x = 1,936,020.35 × 392,126.99 - Step 4: Simplify right side
1,290,677.81x = 759,165,820,783.51 - Step 5: Solve for x
x = 759,165,820,783.51/1,290,677.81 - Step 6: Final answer
x = 588,191.58
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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.