Finding the Fourth Proportional to 877,107.80, 1,315,661.70 and 212,259.80
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Solution
The fourth proportional to 877,107.80, 1,315,661.70 and 212,259.80 is: 318,389.70
Step by Step Solution
- Step 1: Write the proportion equation
877,107.80 : 1,315,661.70 = 212,259.80 : x - Step 2: Convert to fraction form
877,107.80/1,315,661.70 = 212,259.80/x - Step 3: Cross multiply
877,107.80x = 1,315,661.70 × 212,259.80 - Step 4: Simplify right side
877,107.80x = 279,262,089,309.66 - Step 5: Solve for x
x = 279,262,089,309.66/877,107.80 - Step 6: Final answer
x = 318,389.70
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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.