Finding the Fourth Proportional to 939,386,995.20, 1,409,080,492.80 and 854,734,348.80
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Solution
The fourth proportional to 939,386,995.20, 1,409,080,492.80 and 854,734,348.80 is: 1,282,101,523.20
Step by Step Solution
- Step 1: Write the proportion equation
939,386,995.20 : 1,409,080,492.80 = 854,734,348.80 : x - Step 2: Convert to fraction form
939,386,995.20/1,409,080,492.80 = 854,734,348.80/x - Step 3: Cross multiply
939,386,995.20x = 1,409,080,492.80 × 854,734,348.80 - Step 4: Simplify right side
939,386,995.20x = 1,204,389,497,420,190,976 - Step 5: Solve for x
x = 1,204,389,497,420,190,976/939,386,995.20 - Step 6: Final answer
x = 1,282,101,523.20
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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.