Finding the Fourth Proportional to 1,276,831.68, 1,761,861.96 and 732,991.20
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Solution
The fourth proportional to 1,276,831.68, 1,761,861.96 and 732,991.20 is: 1,011,432.70
Step by Step Solution
- Step 1: Write the proportion equation
1,276,831.68 : 1,761,861.96 = 732,991.20 : x - Step 2: Convert to fraction form
1,276,831.68/1,761,861.96 = 732,991.20/x - Step 3: Cross multiply
1,276,831.68x = 1,761,861.96 × 732,991.20 - Step 4: Simplify right side
1,276,831.68x = 1,291,429,312,294.75 - Step 5: Solve for x
x = 1,291,429,312,294.75/1,276,831.68 - Step 6: Final answer
x = 1,011,432.70
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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.