Finding the Fourth Proportional to 538,647,354.84, 743,333,013.72 and 291,128,709.09
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Solution
The fourth proportional to 538,647,354.84, 743,333,013.72 and 291,128,709.09 is: 401,757,436.96
Step by Step Solution
- Step 1: Write the proportion equation
538,647,354.84 : 743,333,013.72 = 291,128,709.09 : x - Step 2: Convert to fraction form
538,647,354.84/743,333,013.72 = 291,128,709.09/x - Step 3: Cross multiply
538,647,354.84x = 743,333,013.72 × 291,128,709.09 - Step 4: Simplify right side
538,647,354.84x = 216,405,580,708,282,848 - Step 5: Solve for x
x = 216,405,580,708,282,848/538,647,354.84 - Step 6: Final answer
x = 401,757,436.96
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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.