Finding the Fourth Proportional to 1,391,852.36, 1,920,208.25 and 868,258.29
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Solution
The fourth proportional to 1,391,852.36, 1,920,208.25 and 868,258.29 is: 1,197,854.58
Step by Step Solution
- Step 1: Write the proportion equation
1,391,852.36 : 1,920,208.25 = 868,258.29 : x - Step 2: Convert to fraction form
1,391,852.36/1,920,208.25 = 868,258.29/x - Step 3: Cross multiply
1,391,852.36x = 1,920,208.25 × 868,258.29 - Step 4: Simplify right side
1,391,852.36x = 1,667,236,727,717.17 - Step 5: Solve for x
x = 1,667,236,727,717.17/1,391,852.36 - Step 6: Final answer
x = 1,197,854.58
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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.