Finding the Fourth Proportional to 1,543,439.74, 2,315,247.09 and 478,633.18
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Solution
The fourth proportional to 1,543,439.74, 2,315,247.09 and 478,633.18 is: 717,976.90
Step by Step Solution
- Step 1: Write the proportion equation
1,543,439.74 : 2,315,247.09 = 478,633.18 : x - Step 2: Convert to fraction form
1,543,439.74/2,315,247.09 = 478,633.18/x - Step 3: Cross multiply
1,543,439.74x = 2,315,247.09 × 478,633.18 - Step 4: Simplify right side
1,543,439.74x = 1,108,154,077,172.45 - Step 5: Solve for x
x = 1,108,154,077,172.45/1,543,439.74 - Step 6: Final answer
x = 717,976.90
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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.