Finding the Fourth Proportional to 811,865.47, 1,120,346.57 and 449,304.61
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Solution
The fourth proportional to 811,865.47, 1,120,346.57 and 449,304.61 is: 620,024.99
Step by Step Solution
- Step 1: Write the proportion equation
811,865.47 : 1,120,346.57 = 449,304.61 : x - Step 2: Convert to fraction form
811,865.47/1,120,346.57 = 449,304.61/x - Step 3: Cross multiply
811,865.47x = 1,120,346.57 × 449,304.61 - Step 4: Simplify right side
811,865.47x = 503,376,878,698.69 - Step 5: Solve for x
x = 503,376,878,698.69/811,865.47 - Step 6: Final answer
x = 620,024.99
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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.