Finding the Fourth Proportional to 579,739.80, 869,609.70 and 439,771.80
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Solution
The fourth proportional to 579,739.80, 869,609.70 and 439,771.80 is: 659,657.70
Step by Step Solution
- Step 1: Write the proportion equation
579,739.80 : 869,609.70 = 439,771.80 : x - Step 2: Convert to fraction form
579,739.80/869,609.70 = 439,771.80/x - Step 3: Cross multiply
579,739.80x = 869,609.70 × 439,771.80 - Step 4: Simplify right side
579,739.80x = 382,429,823,066.46 - Step 5: Solve for x
x = 382,429,823,066.46/579,739.80 - Step 6: Final answer
x = 659,657.70
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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.