Finding the Fourth Proportional to 787,968,015.20, 1,181,952,022.80 and 777,218,472.80
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Solution
The fourth proportional to 787,968,015.20, 1,181,952,022.80 and 777,218,472.80 is: 1,165,827,709.20
Step by Step Solution
- Step 1: Write the proportion equation
787,968,015.20 : 1,181,952,022.80 = 777,218,472.80 : x - Step 2: Convert to fraction form
787,968,015.20/1,181,952,022.80 = 777,218,472.80/x - Step 3: Cross multiply
787,968,015.20x = 1,181,952,022.80 × 777,218,472.80 - Step 4: Simplify right side
787,968,015.20x = 918,634,946,083,486,720 - Step 5: Solve for x
x = 918,634,946,083,486,720/787,968,015.20 - Step 6: Final answer
x = 1,165,827,709.20
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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.