Finding the Fourth Proportional to 811,837.56, 1,120,312.98 and 449,276.52
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Solution
The fourth proportional to 811,837.56, 1,120,312.98 and 449,276.52 is: 619,988.95
Step by Step Solution
- Step 1: Write the proportion equation
811,837.56 : 1,120,312.98 = 449,276.52 : x - Step 2: Convert to fraction form
811,837.56/1,120,312.98 = 449,276.52/x - Step 3: Cross multiply
811,837.56x = 1,120,312.98 × 449,276.52 - Step 4: Simplify right side
811,837.56x = 503,330,316,965.23 - Step 5: Solve for x
x = 503,330,316,965.23/811,837.56 - Step 6: Final answer
x = 619,988.95
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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.