Finding the Fourth Proportional to 1,190,688.46, 1,643,161.75 and 646,828.67
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Solution
The fourth proportional to 1,190,688.46, 1,643,161.75 and 646,828.67 is: 892,629.91
Step by Step Solution
- Step 1: Write the proportion equation
1,190,688.46 : 1,643,161.75 = 646,828.67 : x - Step 2: Convert to fraction form
1,190,688.46/1,643,161.75 = 646,828.67/x - Step 3: Cross multiply
1,190,688.46x = 1,643,161.75 × 646,828.67 - Step 4: Simplify right side
1,190,688.46x = 1,062,844,131,838.21 - Step 5: Solve for x
x = 1,062,844,131,838.21/1,190,688.46 - Step 6: Final answer
x = 892,629.91
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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.