Finding the Fourth Proportional to 5,187,377.76, 7,781,439.84 and 1,992,504.07
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Solution
The fourth proportional to 5,187,377.76, 7,781,439.84 and 1,992,504.07 is: 2,988,899.45
Step by Step Solution
- Step 1: Write the proportion equation
5,187,377.76 : 7,781,439.84 = 1,992,504.07 : x - Step 2: Convert to fraction form
5,187,377.76/7,781,439.84 = 1,992,504.07/x - Step 3: Cross multiply
5,187,377.76x = 7,781,439.84 × 1,992,504.07 - Step 4: Simplify right side
5,187,377.76x = 15,504,550,551,660.15 - Step 5: Solve for x
x = 15,504,550,551,660.15/5,187,377.76 - Step 6: Final answer
x = 2,988,899.45
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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.