Finding the Fourth Proportional to 528,293,526.48, 728,881,578.14 and 305,193,805.94
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Solution
The fourth proportional to 528,293,526.48, 728,881,578.14 and 305,193,805.94 is: 421,073,005.37
Step by Step Solution
- Step 1: Write the proportion equation
528,293,526.48 : 728,881,578.14 = 305,193,805.94 : x - Step 2: Convert to fraction form
528,293,526.48/728,881,578.14 = 305,193,805.94/x - Step 3: Cross multiply
528,293,526.48x = 728,881,578.14 × 305,193,805.94 - Step 4: Simplify right side
528,293,526.48x = 222,450,142,912,396,320 - Step 5: Solve for x
x = 222,450,142,912,396,320/528,293,526.48 - Step 6: Final answer
x = 421,073,005.37
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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.