Finding the Fourth Proportional to 670,657.80, 1,005,986.70 and 513,193.80
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Solution
The fourth proportional to 670,657.80, 1,005,986.70 and 513,193.80 is: 769,790.70
Step by Step Solution
- Step 1: Write the proportion equation
670,657.80 : 1,005,986.70 = 513,193.80 : x - Step 2: Convert to fraction form
670,657.80/1,005,986.70 = 513,193.80/x - Step 3: Cross multiply
670,657.80x = 1,005,986.70 × 513,193.80 - Step 4: Simplify right side
670,657.80x = 516,266,137,322.46 - Step 5: Solve for x
x = 516,266,137,322.46/670,657.80 - Step 6: Final answer
x = 769,790.70
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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.