Finding the Fourth Proportional to 1,392,767.09, 1,921,311.19 and 909,615.05
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Solution
The fourth proportional to 1,392,767.09, 1,921,311.19 and 909,615.05 is: 1,254,806.77
Step by Step Solution
- Step 1: Write the proportion equation
1,392,767.09 : 1,921,311.19 = 909,615.05 : x - Step 2: Convert to fraction form
1,392,767.09/1,921,311.19 = 909,615.05/x - Step 3: Cross multiply
1,392,767.09x = 1,921,311.19 × 909,615.05 - Step 4: Simplify right side
1,392,767.09x = 1,747,653,571,718.09 - Step 5: Solve for x
x = 1,747,653,571,718.09/1,392,767.09 - Step 6: Final answer
x = 1,254,806.77
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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.