Finding the Fourth Proportional to 860,323.09, 1,290,720.36 and 261,303.79
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Solution
The fourth proportional to 860,323.09, 1,290,720.36 and 261,303.79 is: 392,027.28
Step by Step Solution
- Step 1: Write the proportion equation
860,323.09 : 1,290,720.36 = 261,303.79 : x - Step 2: Convert to fraction form
860,323.09/1,290,720.36 = 261,303.79/x - Step 3: Cross multiply
860,323.09x = 1,290,720.36 × 261,303.79 - Step 4: Simplify right side
860,323.09x = 337,270,121,898.16 - Step 5: Solve for x
x = 337,270,121,898.16/860,323.09 - Step 6: Final answer
x = 392,027.28
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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.