Finding the Fourth Proportional to 911,982.40, 1,367,645.52 and 312,788.14
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Solution
The fourth proportional to 911,982.40, 1,367,645.52 and 312,788.14 is: 469,069.69
Step by Step Solution
- Step 1: Write the proportion equation
911,982.40 : 1,367,645.52 = 312,788.14 : x - Step 2: Convert to fraction form
911,982.40/1,367,645.52 = 312,788.14/x - Step 3: Cross multiply
911,982.40x = 1,367,645.52 × 312,788.14 - Step 4: Simplify right side
911,982.40x = 427,783,298,380.13 - Step 5: Solve for x
x = 427,783,298,380.13/911,982.40 - Step 6: Final answer
x = 469,069.69
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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.