Finding the Fourth Proportional to 538,447,638.63, 743,057,742.74 and 290,928,992.88
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Solution
The fourth proportional to 538,447,638.63, 743,057,742.74 and 290,928,992.88 is: 401,482,010.95
Step by Step Solution
- Step 1: Write the proportion equation
538,447,638.63 : 743,057,742.74 = 290,928,992.88 : x - Step 2: Convert to fraction form
538,447,638.63/743,057,742.74 = 290,928,992.88/x - Step 3: Cross multiply
538,447,638.63x = 743,057,742.74 × 290,928,992.88 - Step 4: Simplify right side
538,447,638.63x = 216,177,040,746,569,728 - Step 5: Solve for x
x = 216,177,040,746,569,728/538,447,638.63 - Step 6: Final answer
x = 401,482,010.95
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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.