Finding the Fourth Proportional to 1,276,911.21, 1,915,373.74 and 378,360.74
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Solution
The fourth proportional to 1,276,911.21, 1,915,373.74 and 378,360.74 is: 567,543.16
Step by Step Solution
- Step 1: Write the proportion equation
1,276,911.21 : 1,915,373.74 = 378,360.74 : x - Step 2: Convert to fraction form
1,276,911.21/1,915,373.74 = 378,360.74/x - Step 3: Cross multiply
1,276,911.21x = 1,915,373.74 × 378,360.74 - Step 4: Simplify right side
1,276,911.21x = 724,702,229,485.50 - Step 5: Solve for x
x = 724,702,229,485.50/1,276,911.21 - Step 6: Final answer
x = 567,543.16
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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.