Finding the Fourth Proportional to 768,394,507.68, 1,060,384,762.94 and 415,970,486.99
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Solution
The fourth proportional to 768,394,507.68, 1,060,384,762.94 and 415,970,486.99 is: 574,039,457.36
Step by Step Solution
- Step 1: Write the proportion equation
768,394,507.68 : 1,060,384,762.94 = 415,970,486.99 : x - Step 2: Convert to fraction form
768,394,507.68/1,060,384,762.94 = 415,970,486.99/x - Step 3: Cross multiply
768,394,507.68x = 1,060,384,762.94 × 415,970,486.99 - Step 4: Simplify right side
768,394,507.68x = 441,088,766,229,545,728 - Step 5: Solve for x
x = 441,088,766,229,545,728/768,394,507.68 - Step 6: Final answer
x = 574,039,457.36
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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.