Finding the Fourth Proportional to 421,419,977.94, 631,842,656.59 and 213,757,958.75
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Solution
The fourth proportional to 421,419,977.94, 631,842,656.59 and 213,757,958.75 is: 320,491,204.96
Step by Step Solution
- Step 1: Write the proportion equation
421,419,977.94 : 631,842,656.59 = 213,757,958.75 : x - Step 2: Convert to fraction form
421,419,977.94/631,842,656.59 = 213,757,958.75/x - Step 3: Cross multiply
421,419,977.94x = 631,842,656.59 × 213,757,958.75 - Step 4: Simplify right side
421,419,977.94x = 135,061,396,525,702,432 - Step 5: Solve for x
x = 135,061,396,525,702,432/421,419,977.94 - Step 6: Final answer
x = 320,491,204.96
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.