Finding the Fourth Proportional to 1,440,909.22, 1,988,644.80 and 1,393,591.65
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Solution
The fourth proportional to 1,440,909.22, 1,988,644.80 and 1,393,591.65 is: 1,923,340.31
Step by Step Solution
- Step 1: Write the proportion equation
1,440,909.22 : 1,988,644.80 = 1,393,591.65 : x - Step 2: Convert to fraction form
1,440,909.22/1,988,644.80 = 1,393,591.65/x - Step 3: Cross multiply
1,440,909.22x = 1,988,644.80 × 1,393,591.65 - Step 4: Simplify right side
1,440,909.22x = 2,771,358,778,152.70 - Step 5: Solve for x
x = 2,771,358,778,152.70/1,440,909.22 - Step 6: Final answer
x = 1,923,340.31
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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.