Finding the Fourth Proportional to 1,440,909.72, 1,988,645.49 and 1,393,592.15
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Solution
The fourth proportional to 1,440,909.72, 1,988,645.49 and 1,393,592.15 is: 1,923,340.99
Step by Step Solution
- Step 1: Write the proportion equation
1,440,909.72 : 1,988,645.49 = 1,393,592.15 : x - Step 2: Convert to fraction form
1,440,909.72/1,988,645.49 = 1,393,592.15/x - Step 3: Cross multiply
1,440,909.72x = 1,988,645.49 × 1,393,592.15 - Step 4: Simplify right side
1,440,909.72x = 2,771,360,734,053.68 - Step 5: Solve for x
x = 2,771,360,734,053.68/1,440,909.72 - Step 6: Final answer
x = 1,923,340.99
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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.