Finding the Fourth Proportional to 783,621,323.62, 1,175,431,809.84 and 285,669,169.75
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Solution
The fourth proportional to 783,621,323.62, 1,175,431,809.84 and 285,669,169.75 is: 428,503,690.61
Step by Step Solution
- Step 1: Write the proportion equation
783,621,323.62 : 1,175,431,809.84 = 285,669,169.75 : x - Step 2: Convert to fraction form
783,621,323.62/1,175,431,809.84 = 285,669,169.75/x - Step 3: Cross multiply
783,621,323.62x = 1,175,431,809.84 × 285,669,169.75 - Step 4: Simplify right side
783,621,323.62x = 335,784,629,214,732,672 - Step 5: Solve for x
x = 335,784,629,214,732,672/783,621,323.62 - Step 6: Final answer
x = 428,503,690.61
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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.