Finding the Fourth Proportional to 811,831.56, 1,120,299.98 and 449,270.70
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Solution
The fourth proportional to 811,831.56, 1,120,299.98 and 449,270.70 is: 619,978.31
Step by Step Solution
- Step 1: Write the proportion equation
811,831.56 : 1,120,299.98 = 449,270.70 : x - Step 2: Convert to fraction form
811,831.56/1,120,299.98 = 449,270.70/x - Step 3: Cross multiply
811,831.56x = 1,120,299.98 × 449,270.70 - Step 4: Simplify right side
811,831.56x = 503,317,956,224.59 - Step 5: Solve for x
x = 503,317,956,224.59/811,831.56 - Step 6: Final answer
x = 619,978.31
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.