Finding the Fourth Proportional to 860,135.11, 1,289,480.95 and 380,285.44
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Solution
The fourth proportional to 860,135.11, 1,289,480.95 and 380,285.44 is: 570,109.07
Step by Step Solution
- Step 1: Write the proportion equation
860,135.11 : 1,289,480.95 = 380,285.44 : x - Step 2: Convert to fraction form
860,135.11/1,289,480.95 = 380,285.44/x - Step 3: Cross multiply
860,135.11x = 1,289,480.95 × 380,285.44 - Step 4: Simplify right side
860,135.11x = 490,370,830,442.37 - Step 5: Solve for x
x = 490,370,830,442.37/860,135.11 - Step 6: Final answer
x = 570,109.07
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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.