Finding the Fourth Proportional to 621,133,777.12, 931,667,073.36 and 190,313,517.28
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Solution
The fourth proportional to 621,133,777.12, 931,667,073.36 and 190,313,517.28 is: 285,459,983.33
Step by Step Solution
- Step 1: Write the proportion equation
621,133,777.12 : 931,667,073.36 = 190,313,517.28 : x - Step 2: Convert to fraction form
621,133,777.12/931,667,073.36 = 190,313,517.28/x - Step 3: Cross multiply
621,133,777.12x = 931,667,073.36 × 190,313,517.28 - Step 4: Simplify right side
621,133,777.12x = 177,308,837,665,105,376 - Step 5: Solve for x
x = 177,308,837,665,105,376/621,133,777.12 - Step 6: Final answer
x = 285,459,983.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.