Finding the Fourth Proportional to 2,135,805.75, 2,946,679.06 and 1,217,372.40
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Solution
The fourth proportional to 2,135,805.75, 2,946,679.06 and 1,217,372.40 is: 1,679,556.19
Step by Step Solution
- Step 1: Write the proportion equation
2,135,805.75 : 2,946,679.06 = 1,217,372.40 : x - Step 2: Convert to fraction form
2,135,805.75/2,946,679.06 = 1,217,372.40/x - Step 3: Cross multiply
2,135,805.75x = 2,946,679.06 × 1,217,372.40 - Step 4: Simplify right side
2,135,805.75x = 3,587,205,759,301.94 - Step 5: Solve for x
x = 3,587,205,759,301.94/2,135,805.75 - Step 6: Final answer
x = 1,679,556.19
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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.