Finding the Fourth Proportional to 2,157,777.95, 2,977,718.87 and 1,190,908.19
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Solution
The fourth proportional to 2,157,777.95, 2,977,718.87 and 1,190,908.19 is: 1,643,445.20
Step by Step Solution
- Step 1: Write the proportion equation
2,157,777.95 : 2,977,718.87 = 1,190,908.19 : x - Step 2: Convert to fraction form
2,157,777.95/2,977,718.87 = 1,190,908.19/x - Step 3: Cross multiply
2,157,777.95x = 2,977,718.87 × 1,190,908.19 - Step 4: Simplify right side
2,157,777.95x = 3,546,189,800,222.11 - Step 5: Solve for x
x = 3,546,189,800,222.11/2,157,777.95 - Step 6: Final answer
x = 1,643,445.20
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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.