Finding the Fourth Proportional to 860,282.51, 1,290,425.82 and 261,248.18
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Solution
The fourth proportional to 860,282.51, 1,290,425.82 and 261,248.18 is: 391,872.89
Step by Step Solution
- Step 1: Write the proportion equation
860,282.51 : 1,290,425.82 = 261,248.18 : x - Step 2: Convert to fraction form
860,282.51/1,290,425.82 = 261,248.18/x - Step 3: Cross multiply
860,282.51x = 1,290,425.82 × 261,248.18 - Step 4: Simplify right side
860,282.51x = 337,121,396,900.01 - Step 5: Solve for x
x = 337,121,396,900.01/860,282.51 - Step 6: Final answer
x = 391,872.89
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.