Finding the Fourth Proportional to 807,422,523.20, 1,211,700,655.20 and 347,690,628.80
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Solution
The fourth proportional to 807,422,523.20, 1,211,700,655.20 and 347,690,628.80 is: 521,780,047.77
Step by Step Solution
- Step 1: Write the proportion equation
807,422,523.20 : 1,211,700,655.20 = 347,690,628.80 : x - Step 2: Convert to fraction form
807,422,523.20/1,211,700,655.20 = 347,690,628.80/x - Step 3: Cross multiply
807,422,523.20x = 1,211,700,655.20 × 347,690,628.80 - Step 4: Simplify right side
807,422,523.20x = 421,296,962,723,860,032 - Step 5: Solve for x
x = 421,296,962,723,860,032/807,422,523.20 - Step 6: Final answer
x = 521,780,047.77
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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.