Finding the Fourth Proportional to 1,190,813.70, 1,643,315.94 and 646,945.14
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Solution
The fourth proportional to 1,190,813.70, 1,643,315.94 and 646,945.14 is: 892,780.51
Step by Step Solution
- Step 1: Write the proportion equation
1,190,813.70 : 1,643,315.94 = 646,945.14 : x - Step 2: Convert to fraction form
1,190,813.70/1,643,315.94 = 646,945.14/x - Step 3: Cross multiply
1,190,813.70x = 1,643,315.94 × 646,945.14 - Step 4: Simplify right side
1,190,813.70x = 1,063,135,260,867.53 - Step 5: Solve for x
x = 1,063,135,260,867.53/1,190,813.70 - Step 6: Final answer
x = 892,780.51
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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.