Finding the Fourth Proportional to 7,820,138.34, 10,787,955.99 and 6,786,194.94
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Solution
The fourth proportional to 7,820,138.34, 10,787,955.99 and 6,786,194.94 is: 9,361,621.13
Step by Step Solution
- Step 1: Write the proportion equation
7,820,138.34 : 10,787,955.99 = 6,786,194.94 : x - Step 2: Convert to fraction form
7,820,138.34/10,787,955.99 = 6,786,194.94/x - Step 3: Cross multiply
7,820,138.34x = 10,787,955.99 × 6,786,194.94 - Step 4: Simplify right side
7,820,138.34x = 73,209,172,264,409.92 - Step 5: Solve for x
x = 73,209,172,264,409.92/7,820,138.34 - Step 6: Final answer
x = 9,361,621.13
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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.