Finding the Fourth Proportional to 860,854.70, 1,291,282.05 and 261,811.10
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Solution
The fourth proportional to 860,854.70, 1,291,282.05 and 261,811.10 is: 392,716.65
Step by Step Solution
- Step 1: Write the proportion equation
860,854.70 : 1,291,282.05 = 261,811.10 : x - Step 2: Convert to fraction form
860,854.70/1,291,282.05 = 261,811.10/x - Step 3: Cross multiply
860,854.70x = 1,291,282.05 × 261,811.10 - Step 4: Simplify right side
860,854.70x = 338,071,973,920.76 - Step 5: Solve for x
x = 338,071,973,920.76/860,854.70 - Step 6: Final answer
x = 392,716.65
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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.