Finding the Fourth Proportional to 1,208,013.99, 1,665,689.69 and 771,855.11
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Solution
The fourth proportional to 1,208,013.99, 1,665,689.69 and 771,855.11 is: 1,064,284.93
Step by Step Solution
- Step 1: Write the proportion equation
1,208,013.99 : 1,665,689.69 = 771,855.11 : x - Step 2: Convert to fraction form
1,208,013.99/1,665,689.69 = 771,855.11/x - Step 3: Cross multiply
1,208,013.99x = 1,665,689.69 × 771,855.11 - Step 4: Simplify right side
1,208,013.99x = 1,285,671,086,713.09 - Step 5: Solve for x
x = 1,285,671,086,713.09/1,208,013.99 - Step 6: Final answer
x = 1,064,284.93
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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.