Finding the Fourth Proportional to 1,221,014.26, 1,685,106.24 and 711,705.70
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Solution
The fourth proportional to 1,221,014.26, 1,685,106.24 and 711,705.70 is: 982,215.98
Step by Step Solution
- Step 1: Write the proportion equation
1,221,014.26 : 1,685,106.24 = 711,705.70 : x - Step 2: Convert to fraction form
1,221,014.26/1,685,106.24 = 711,705.70/x - Step 3: Cross multiply
1,221,014.26x = 1,685,106.24 × 711,705.70 - Step 4: Simplify right side
1,221,014.26x = 1,199,299,716,113.57 - Step 5: Solve for x
x = 1,199,299,716,113.57/1,221,014.26 - Step 6: Final answer
x = 982,215.98
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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.