Finding the Fourth Proportional to 1,311,795.48, 1,810,730.79 and 768,106.05
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Solution
The fourth proportional to 1,311,795.48, 1,810,730.79 and 768,106.05 is: 1,060,251.61
Step by Step Solution
- Step 1: Write the proportion equation
1,311,795.48 : 1,810,730.79 = 768,106.05 : x - Step 2: Convert to fraction form
1,311,795.48/1,810,730.79 = 768,106.05/x - Step 3: Cross multiply
1,311,795.48x = 1,810,730.79 × 768,106.05 - Step 4: Simplify right side
1,311,795.48x = 1,390,833,274,720.28 - Step 5: Solve for x
x = 1,390,833,274,720.28/1,311,795.48 - Step 6: Final answer
x = 1,060,251.61
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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.