Finding the Fourth Proportional to 1,977,475.09, 2,728,989.12 and 1,117,984.09
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Solution
The fourth proportional to 1,977,475.09, 2,728,989.12 and 1,117,984.09 is: 1,542,859.60
Step by Step Solution
- Step 1: Write the proportion equation
1,977,475.09 : 2,728,989.12 = 1,117,984.09 : x - Step 2: Convert to fraction form
1,977,475.09/2,728,989.12 = 1,117,984.09/x - Step 3: Cross multiply
1,977,475.09x = 2,728,989.12 × 1,117,984.09 - Step 4: Simplify right side
1,977,475.09x = 3,050,966,417,943.10 - Step 5: Solve for x
x = 3,050,966,417,943.10/1,977,475.09 - Step 6: Final answer
x = 1,542,859.60
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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.