Finding the Fourth Proportional to 1,538,205.65, 2,122,766.58 and 849,921.84
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Solution
The fourth proportional to 1,538,205.65, 2,122,766.58 and 849,921.84 is: 1,172,915.78
Step by Step Solution
- Step 1: Write the proportion equation
1,538,205.65 : 2,122,766.58 = 849,921.84 : x - Step 2: Convert to fraction form
1,538,205.65/2,122,766.58 = 849,921.84/x - Step 3: Cross multiply
1,538,205.65x = 2,122,766.58 × 849,921.84 - Step 4: Simplify right side
1,538,205.65x = 1,804,185,677,564.11 - Step 5: Solve for x
x = 1,804,185,677,564.11/1,538,205.65 - Step 6: Final answer
x = 1,172,915.78
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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.