Finding the Fourth Proportional to 1,211,386.05, 1,671,786.81 and 667,522.08
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Solution
The fourth proportional to 1,211,386.05, 1,671,786.81 and 667,522.08 is: 921,221.28
Step by Step Solution
- Step 1: Write the proportion equation
1,211,386.05 : 1,671,786.81 = 667,522.08 : x - Step 2: Convert to fraction form
1,211,386.05/1,671,786.81 = 667,522.08/x - Step 3: Cross multiply
1,211,386.05x = 1,671,786.81 × 667,522.08 - Step 4: Simplify right side
1,211,386.05x = 1,115,954,608,727.76 - Step 5: Solve for x
x = 1,115,954,608,727.76/1,211,386.05 - Step 6: Final answer
x = 921,221.28
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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.