Finding the Fourth Proportional to 1,279,378.12, 1,918,955.76 and 521,299.48
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Solution
The fourth proportional to 1,279,378.12, 1,918,955.76 and 521,299.48 is: 781,903.82
Step by Step Solution
- Step 1: Write the proportion equation
1,279,378.12 : 1,918,955.76 = 521,299.48 : x - Step 2: Convert to fraction form
1,279,378.12/1,918,955.76 = 521,299.48/x - Step 3: Cross multiply
1,279,378.12x = 1,918,955.76 × 521,299.48 - Step 4: Simplify right side
1,279,378.12x = 1,000,350,639,831.00 - Step 5: Solve for x
x = 1,000,350,639,831.00/1,279,378.12 - Step 6: Final answer
x = 781,903.82
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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.