Finding the Fourth Proportional to 984,905.70, 1,477,358.55 and 860,489.70
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Solution
The fourth proportional to 984,905.70, 1,477,358.55 and 860,489.70 is: 1,290,734.55
Step by Step Solution
- Step 1: Write the proportion equation
984,905.70 : 1,477,358.55 = 860,489.70 : x - Step 2: Convert to fraction form
984,905.70/1,477,358.55 = 860,489.70/x - Step 3: Cross multiply
984,905.70x = 1,477,358.55 × 860,489.70 - Step 4: Simplify right side
984,905.70x = 1,271,251,815,481.94 - Step 5: Solve for x
x = 1,271,251,815,481.94/984,905.70 - Step 6: Final answer
x = 1,290,734.55
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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.