Finding the Fourth Proportional to 528,293,527.98, 728,881,580.21 and 305,193,807.45
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Solution
The fourth proportional to 528,293,527.98, 728,881,580.21 and 305,193,807.45 is: 421,073,007.45
Step by Step Solution
- Step 1: Write the proportion equation
528,293,527.98 : 728,881,580.21 = 305,193,807.45 : x - Step 2: Convert to fraction form
528,293,527.98/728,881,580.21 = 305,193,807.45/x - Step 3: Cross multiply
528,293,527.98x = 728,881,580.21 × 305,193,807.45 - Step 4: Simplify right side
528,293,527.98x = 222,450,144,642,936,512 - Step 5: Solve for x
x = 222,450,144,642,936,512/528,293,527.98 - Step 6: Final answer
x = 421,073,007.45
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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.