Finding the Fourth Proportional to 729,453,926.89, 1,006,654,539.99 and 394,933,739.23
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Solution
The fourth proportional to 729,453,926.89, 1,006,654,539.99 and 394,933,739.23 is: 545,012,956.87
Step by Step Solution
- Step 1: Write the proportion equation
729,453,926.89 : 1,006,654,539.99 = 394,933,739.23 : x - Step 2: Convert to fraction form
729,453,926.89/1,006,654,539.99 = 394,933,739.23/x - Step 3: Cross multiply
729,453,926.89x = 1,006,654,539.99 × 394,933,739.23 - Step 4: Simplify right side
729,453,926.89x = 397,561,841,591,106,304 - Step 5: Solve for x
x = 397,561,841,591,106,304/729,453,926.89 - Step 6: Final answer
x = 545,012,956.87
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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.