Finding the Fourth Proportional to 775,378.80, 1,163,106.60 and 402,130.80
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Solution
The fourth proportional to 775,378.80, 1,163,106.60 and 402,130.80 is: 603,216.12
Step by Step Solution
- Step 1: Write the proportion equation
775,378.80 : 1,163,106.60 = 402,130.80 : x - Step 2: Convert to fraction form
775,378.80/1,163,106.60 = 402,130.80/x - Step 3: Cross multiply
775,378.80x = 1,163,106.60 × 402,130.80 - Step 4: Simplify right side
775,378.80x = 467,720,987,543.28 - Step 5: Solve for x
x = 467,720,987,543.28/775,378.80 - Step 6: Final answer
x = 603,216.12
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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.