Finding the Fourth Proportional to 1,557,455.91, 2,149,285.14 and 869,120.43
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Solution
The fourth proportional to 1,557,455.91, 2,149,285.14 and 869,120.43 is: 1,199,383.95
Step by Step Solution
- Step 1: Write the proportion equation
1,557,455.91 : 2,149,285.14 = 869,120.43 : x - Step 2: Convert to fraction form
1,557,455.91/2,149,285.14 = 869,120.43/x - Step 3: Cross multiply
1,557,455.91x = 2,149,285.14 × 869,120.43 - Step 4: Simplify right side
1,557,455.91x = 1,867,987,625,069.41 - Step 5: Solve for x
x = 1,867,987,625,069.41/1,557,455.91 - Step 6: Final answer
x = 1,199,383.95
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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.