Finding the Fourth Proportional to 790,161,272.20, 1,090,489,517.18 and 437,847,775.66
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Solution
The fourth proportional to 790,161,272.20, 1,090,489,517.18 and 437,847,775.66 is: 604,267,035.45
Step by Step Solution
- Step 1: Write the proportion equation
790,161,272.20 : 1,090,489,517.18 = 437,847,775.66 : x - Step 2: Convert to fraction form
790,161,272.20/1,090,489,517.18 = 437,847,775.66/x - Step 3: Cross multiply
790,161,272.20x = 1,090,489,517.18 × 437,847,775.66 - Step 4: Simplify right side
790,161,272.20x = 477,468,409,477,810,432 - Step 5: Solve for x
x = 477,468,409,477,810,432/790,161,272.20 - Step 6: Final answer
x = 604,267,035.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.