Finding the Fourth Proportional to 2,128,728, 2,937,195.77 and 1,354,077.21
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Solution
The fourth proportional to 2,128,728, 2,937,195.77 and 1,354,077.21 is: 1,868,341.02
Step by Step Solution
- Step 1: Write the proportion equation
2,128,728 : 2,937,195.77 = 1,354,077.21 : x - Step 2: Convert to fraction form
2,128,728/2,937,195.77 = 1,354,077.21/x - Step 3: Cross multiply
2,128,728x = 2,937,195.77 × 1,354,077.21 - Step 4: Simplify right side
2,128,728x = 3,977,189,846,695.02 - Step 5: Solve for x
x = 3,977,189,846,695.02/2,128,728 - Step 6: Final answer
x = 1,868,341.02
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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.