Finding the Fourth Proportional to 811,603.14, 1,120,371.06 and 485,031.36
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Solution
The fourth proportional to 811,603.14, 1,120,371.06 and 485,031.36 is: 669,557.66
Step by Step Solution
- Step 1: Write the proportion equation
811,603.14 : 1,120,371.06 = 485,031.36 : x - Step 2: Convert to fraction form
811,603.14/1,120,371.06 = 485,031.36/x - Step 3: Cross multiply
811,603.14x = 1,120,371.06 × 485,031.36 - Step 4: Simplify right side
811,603.14x = 543,415,098,936.44 - Step 5: Solve for x
x = 543,415,098,936.44/811,603.14 - Step 6: Final answer
x = 669,557.66
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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.