Finding the Fourth Proportional to 618,911.80, 928,367.70 and 461,447.80
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Solution
The fourth proportional to 618,911.80, 928,367.70 and 461,447.80 is: 692,171.70
Step by Step Solution
- Step 1: Write the proportion equation
618,911.80 : 928,367.70 = 461,447.80 : x - Step 2: Convert to fraction form
618,911.80/928,367.70 = 461,447.80/x - Step 3: Cross multiply
618,911.80x = 928,367.70 × 461,447.80 - Step 4: Simplify right side
618,911.80x = 428,393,232,756.06 - Step 5: Solve for x
x = 428,393,232,756.06/618,911.80 - Step 6: Final answer
x = 692,171.70
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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.