Finding the Fourth Proportional to 2,319,777,811.20, 3,479,666,716.80 and 787,968,019.20
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Solution
The fourth proportional to 2,319,777,811.20, 3,479,666,716.80 and 787,968,019.20 is: 1,181,952,028.80
Step by Step Solution
- Step 1: Write the proportion equation
2,319,777,811.20 : 3,479,666,716.80 = 787,968,019.20 : x - Step 2: Convert to fraction form
2,319,777,811.20/3,479,666,716.80 = 787,968,019.20/x - Step 3: Cross multiply
2,319,777,811.20x = 3,479,666,716.80 × 787,968,019.20 - Step 4: Simplify right side
2,319,777,811.20x = 2,741,866,090,313,063,424 - Step 5: Solve for x
x = 2,741,866,090,313,063,424/2,319,777,811.20 - Step 6: Final answer
x = 1,181,952,028.80
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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.