Finding the Fourth Proportional to 3,878,480.45, 5,817,720.68 and 1,984,188.53
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Solution
The fourth proportional to 3,878,480.45, 5,817,720.68 and 1,984,188.53 is: 2,976,282.79
Step by Step Solution
- Step 1: Write the proportion equation
3,878,480.45 : 5,817,720.68 = 1,984,188.53 : x - Step 2: Convert to fraction form
3,878,480.45/5,817,720.68 = 1,984,188.53/x - Step 3: Cross multiply
3,878,480.45x = 5,817,720.68 × 1,984,188.53 - Step 4: Simplify right side
3,878,480.45x = 11,543,454,604,990.25 - Step 5: Solve for x
x = 11,543,454,604,990.25/3,878,480.45 - Step 6: Final answer
x = 2,976,282.79
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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.