Finding the Fourth Proportional to 1,432,455.12, 1,976,789.88 and 787,876.56
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Solution
The fourth proportional to 1,432,455.12, 1,976,789.88 and 787,876.56 is: 1,087,270.65
Step by Step Solution
- Step 1: Write the proportion equation
1,432,455.12 : 1,976,789.88 = 787,876.56 : x - Step 2: Convert to fraction form
1,432,455.12/1,976,789.88 = 787,876.56/x - Step 3: Cross multiply
1,432,455.12x = 1,976,789.88 × 787,876.56 - Step 4: Simplify right side
1,432,455.12x = 1,557,466,410,497.21 - Step 5: Solve for x
x = 1,557,466,410,497.21/1,432,455.12 - Step 6: Final answer
x = 1,087,270.65
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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.