Finding the Fourth Proportional to 428,809.23, 643,082.09 and 296,539.47
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Solution
The fourth proportional to 428,809.23, 643,082.09 and 296,539.47 is: 444,718.09
Step by Step Solution
- Step 1: Write the proportion equation
428,809.23 : 643,082.09 = 296,539.47 : x - Step 2: Convert to fraction form
428,809.23/643,082.09 = 296,539.47/x - Step 3: Cross multiply
428,809.23x = 643,082.09 × 296,539.47 - Step 4: Simplify right side
428,809.23x = 190,699,220,652.40 - Step 5: Solve for x
x = 190,699,220,652.40/428,809.23 - Step 6: Final answer
x = 444,718.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.