Finding the Fourth Proportional to 439,813.80, 659,720.70 and 299,845.80
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Solution
The fourth proportional to 439,813.80, 659,720.70 and 299,845.80 is: 449,768.70
Step by Step Solution
- Step 1: Write the proportion equation
439,813.80 : 659,720.70 = 299,845.80 : x - Step 2: Convert to fraction form
439,813.80/659,720.70 = 299,845.80/x - Step 3: Cross multiply
439,813.80x = 659,720.70 × 299,845.80 - Step 4: Simplify right side
439,813.80x = 197,814,481,068.06 - Step 5: Solve for x
x = 197,814,481,068.06/439,813.80 - Step 6: Final answer
x = 449,768.70
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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.