Finding the Fourth Proportional to 488,561,971.99, 674,212,376.65 and 279,758,470.99
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Solution
The fourth proportional to 488,561,971.99, 674,212,376.65 and 279,758,470.99 is: 386,064,889.26
Step by Step Solution
- Step 1: Write the proportion equation
488,561,971.99 : 674,212,376.65 = 279,758,470.99 : x - Step 2: Convert to fraction form
488,561,971.99/674,212,376.65 = 279,758,470.99/x - Step 3: Cross multiply
488,561,971.99x = 674,212,376.65 × 279,758,470.99 - Step 4: Simplify right side
488,561,971.99x = 188,616,623,612,739,200 - Step 5: Solve for x
x = 188,616,623,612,739,200/488,561,971.99 - Step 6: Final answer
x = 386,064,889.26
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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.