Finding the Fourth Proportional to 419,905,537.80, 629,858,306.70 and 402,899,425.80
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Solution
The fourth proportional to 419,905,537.80, 629,858,306.70 and 402,899,425.80 is: 604,349,138.70
Step by Step Solution
- Step 1: Write the proportion equation
419,905,537.80 : 629,858,306.70 = 402,899,425.80 : x - Step 2: Convert to fraction form
419,905,537.80/629,858,306.70 = 402,899,425.80/x - Step 3: Cross multiply
419,905,537.80x = 629,858,306.70 × 402,899,425.80 - Step 4: Simplify right side
419,905,537.80x = 253,769,550,104,790,304 - Step 5: Solve for x
x = 253,769,550,104,790,304/419,905,537.80 - Step 6: Final answer
x = 604,349,138.70
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1.5x scale
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.