Finding the Fourth Proportional to 830,629,152.80, 1,245,943,729.20 and 345,891,975.20
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Solution
The fourth proportional to 830,629,152.80, 1,245,943,729.20 and 345,891,975.20 is: 518,837,962.80
Step by Step Solution
- Step 1: Write the proportion equation
830,629,152.80 : 1,245,943,729.20 = 345,891,975.20 : x - Step 2: Convert to fraction form
830,629,152.80/1,245,943,729.20 = 345,891,975.20/x - Step 3: Cross multiply
830,629,152.80x = 1,245,943,729.20 × 345,891,975.20 - Step 4: Simplify right side
830,629,152.80x = 430,961,937,481,041,920 - Step 5: Solve for x
x = 430,961,937,481,041,920/830,629,152.80 - Step 6: Final answer
x = 518,837,962.80
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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.