Finding the Fourth Proportional to 1,217,427.21, 1,680,587.64 and 727,569.54
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Solution
The fourth proportional to 1,217,427.21, 1,680,587.64 and 727,569.54 is: 1,004,367.54
Step by Step Solution
- Step 1: Write the proportion equation
1,217,427.21 : 1,680,587.64 = 727,569.54 : x - Step 2: Convert to fraction form
1,217,427.21/1,680,587.64 = 727,569.54/x - Step 3: Cross multiply
1,217,427.21x = 1,680,587.64 × 727,569.54 - Step 4: Simplify right side
1,217,427.21x = 1,222,744,376,164.49 - Step 5: Solve for x
x = 1,222,744,376,164.49/1,217,427.21 - Step 6: Final answer
x = 1,004,367.54
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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.