Finding the Fourth Proportional to 1,394,977.48, 1,924,839.68 and 821,939.74
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Solution
The fourth proportional to 1,394,977.48, 1,924,839.68 and 821,939.74 is: 1,134,141.76
Step by Step Solution
- Step 1: Write the proportion equation
1,394,977.48 : 1,924,839.68 = 821,939.74 : x - Step 2: Convert to fraction form
1,394,977.48/1,924,839.68 = 821,939.74/x - Step 3: Cross multiply
1,394,977.48x = 1,924,839.68 × 821,939.74 - Step 4: Simplify right side
1,394,977.48x = 1,582,102,217,199.09 - Step 5: Solve for x
x = 1,582,102,217,199.09/1,394,977.48 - Step 6: Final answer
x = 1,134,141.76
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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.