Finding the Fourth Proportional to 643,808,697.75, 888,405,349.95 and 365,350,220.37
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Solution
The fourth proportional to 643,808,697.75, 888,405,349.95 and 365,350,220.37 is: 504,154,559.45
Step by Step Solution
- Step 1: Write the proportion equation
643,808,697.75 : 888,405,349.95 = 365,350,220.37 : x - Step 2: Convert to fraction form
643,808,697.75/888,405,349.95 = 365,350,220.37/x - Step 3: Cross multiply
643,808,697.75x = 888,405,349.95 × 365,350,220.37 - Step 4: Simplify right side
643,808,697.75x = 324,579,090,382,119,488 - Step 5: Solve for x
x = 324,579,090,382,119,488/643,808,697.75 - Step 6: Final answer
x = 504,154,559.45
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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.