Finding the Fourth Proportional to 2,399,115.81, 3,310,688.39 and 1,311,378.15
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Solution
The fourth proportional to 2,399,115.81, 3,310,688.39 and 1,311,378.15 is: 1,809,651.87
Step by Step Solution
- Step 1: Write the proportion equation
2,399,115.81 : 3,310,688.39 = 1,311,378.15 : x - Step 2: Convert to fraction form
2,399,115.81/3,310,688.39 = 1,311,378.15/x - Step 3: Cross multiply
2,399,115.81x = 3,310,688.39 × 1,311,378.15 - Step 4: Simplify right side
2,399,115.81x = 4,341,564,409,547.79 - Step 5: Solve for x
x = 4,341,564,409,547.79/2,399,115.81 - Step 6: Final answer
x = 1,809,651.87
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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.