Finding the Fourth Proportional to 1,392,671.99, 1,921,791.11 and 772,418.63
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Solution
The fourth proportional to 1,392,671.99, 1,921,791.11 and 772,418.63 is: 1,065,884.33
Step by Step Solution
- Step 1: Write the proportion equation
1,392,671.99 : 1,921,791.11 = 772,418.63 : x - Step 2: Convert to fraction form
1,392,671.99/1,921,791.11 = 772,418.63/x - Step 3: Cross multiply
1,392,671.99x = 1,921,791.11 × 772,418.63 - Step 4: Simplify right side
1,392,671.99x = 1,484,427,245,757.90 - Step 5: Solve for x
x = 1,484,427,245,757.90/1,392,671.99 - Step 6: Final answer
x = 1,065,884.33
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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.