Finding the Fourth Proportional to 528,126,215.09, 728,777,603.84 and 293,158,368.68
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Solution
The fourth proportional to 528,126,215.09, 728,777,603.84 and 293,158,368.68 is: 404,538,247.42
Step by Step Solution
- Step 1: Write the proportion equation
528,126,215.09 : 728,777,603.84 = 293,158,368.68 : x - Step 2: Convert to fraction form
528,126,215.09/728,777,603.84 = 293,158,368.68/x - Step 3: Cross multiply
528,126,215.09x = 728,777,603.84 × 293,158,368.68 - Step 4: Simplify right side
528,126,215.09x = 213,647,253,467,144,032 - Step 5: Solve for x
x = 213,647,253,467,144,032/528,126,215.09 - Step 6: Final answer
x = 404,538,247.42
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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.